diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitCustomItem.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitCustomItem.java
index 6d32b362d..0ccf7e0fb 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitCustomItem.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitCustomItem.java
@@ -1,5 +1,6 @@
 package net.momirealms.craftengine.bukkit.item;
 
+import com.google.common.collect.ImmutableMap;
 import net.momirealms.craftengine.bukkit.plugin.BukkitCraftEngine;
 import net.momirealms.craftengine.bukkit.util.MaterialUtils;
 import net.momirealms.craftengine.core.item.CustomItem;
@@ -7,57 +8,97 @@ import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.item.ItemSettings;
 import net.momirealms.craftengine.core.item.behavior.ItemBehavior;
-import net.momirealms.craftengine.core.item.modifier.ItemModifier;
+import net.momirealms.craftengine.core.item.modifier.ItemDataModifier;
 import net.momirealms.craftengine.core.util.Key;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 
 public class BukkitCustomItem implements CustomItem<ItemStack> {
     private final Key id;
     private final Key materialKey;
     private final Material material;
-    private final List<ItemModifier<ItemStack>> modifiers;
-    private final List<ItemBehavior> behavior;
+    private final List<ItemDataModifier<ItemStack>> modifiers;
+    private final Map<String, ItemDataModifier<ItemStack>> modifierMap;
+    private final List<ItemDataModifier<ItemStack>> clientBoundModifiers;
+    private final Map<String, ItemDataModifier<ItemStack>> clientBoundModifierMap;
+    private final List<ItemBehavior> behaviors;
     private final ItemSettings settings;
 
-    public BukkitCustomItem(Key id, Key materialKey, Material material, List<ItemModifier<ItemStack>> modifiers, List<ItemBehavior> behavior, ItemSettings settings) {
+    public BukkitCustomItem(Key id,
+                            Key materialKey,
+                            Material material,
+                            List<ItemDataModifier<ItemStack>> modifiers,
+                            List<ItemDataModifier<ItemStack>> clientBoundModifiers,
+                            List<ItemBehavior> behaviors,
+                            ItemSettings settings) {
         this.id = id;
         this.material = material;
-        this.modifiers = modifiers;
-        this.behavior = behavior;
         this.materialKey = materialKey;
+        this.modifiers = List.copyOf(modifiers);
+        this.clientBoundModifiers = List.copyOf(clientBoundModifiers);
+        this.behaviors = List.copyOf(behaviors);
         this.settings = settings;
+        ImmutableMap.Builder<String, ItemDataModifier<ItemStack>> modifierMapBuilder = ImmutableMap.builder();
+        for (ItemDataModifier<ItemStack> modifier : modifiers) {
+            modifierMapBuilder.put(modifier.name(), modifier);
+        }
+        this.modifierMap = modifierMapBuilder.build();
+        ImmutableMap.Builder<String, ItemDataModifier<ItemStack>> clientSideModifierMapBuilder = ImmutableMap.builder();
+        for (ItemDataModifier<ItemStack> modifier : clientBoundModifiers) {
+            clientSideModifierMapBuilder.put(modifier.name(), modifier);
+        }
+        this.clientBoundModifierMap = clientSideModifierMapBuilder.build();
     }
 
     @Override
     public Key id() {
-        return id;
+        return this.id;
     }
 
     @Override
     public Key material() {
-        return materialKey;
+        return this.materialKey;
     }
 
     @Override
-    public List<ItemModifier<ItemStack>> modifiers() {
-        return modifiers;
+    public List<ItemDataModifier<ItemStack>> dataModifiers() {
+        return this.modifiers;
+    }
+
+    @Override
+    public Map<String, ItemDataModifier<ItemStack>> dataModifierMap() {
+        return this.modifierMap;
+    }
+
+    @Override
+    public boolean hasClientBoundDataModifier() {
+        return !this.clientBoundModifiers.isEmpty();
+    }
+
+    @Override
+    public List<ItemDataModifier<ItemStack>> clientBoundDataModifiers() {
+        return this.clientBoundModifiers;
+    }
+
+    @Override
+    public Map<String, ItemDataModifier<ItemStack>> clientBoundDataModifierMap() {
+        return this.clientBoundModifierMap;
     }
 
     @Override
     public ItemStack buildItemStack(ItemBuildContext context, int count) {
-        ItemStack item = new ItemStack(material);
+        ItemStack item = new ItemStack(this.material);
         if (this.modifiers.isEmpty()) {
             return item;
         }
         Item<ItemStack> wrapped = BukkitCraftEngine.instance().itemManager().wrap(item);
         wrapped.count(count);
-        for (ItemModifier<ItemStack> modifier : this.modifiers) {
+        for (ItemDataModifier<ItemStack> modifier : this.modifiers) {
             modifier.apply(wrapped, context);
         }
         return wrapped.load();
@@ -70,9 +111,9 @@ public class BukkitCustomItem implements CustomItem<ItemStack> {
 
     @Override
     public Item<ItemStack> buildItem(ItemBuildContext context) {
-        ItemStack item = new ItemStack(material);
+        ItemStack item = new ItemStack(this.material);
         Item<ItemStack> wrapped = BukkitCraftEngine.instance().itemManager().wrap(item);
-        for (ItemModifier<ItemStack> modifier : modifiers()) {
+        for (ItemDataModifier<ItemStack> modifier : dataModifiers()) {
             modifier.apply(wrapped, context);
         }
         wrapped.load();
@@ -81,7 +122,7 @@ public class BukkitCustomItem implements CustomItem<ItemStack> {
 
     @Override
     public @NotNull List<ItemBehavior> behaviors() {
-        return this.behavior;
+        return this.behaviors;
     }
 
     public static Builder<ItemStack> builder() {
@@ -92,9 +133,10 @@ public class BukkitCustomItem implements CustomItem<ItemStack> {
         private Key id;
         private Material material;
         private Key materialKey;
-        private List<ItemBehavior> behavior = List.of();
+        private final List<ItemBehavior> behaviors = new ArrayList<>();
         private ItemSettings settings = ItemSettings.of();
-        private final List<ItemModifier<ItemStack>> modifiers = new ArrayList<>();
+        private final List<ItemDataModifier<ItemStack>> modifiers = new ArrayList<>();
+        private final List<ItemDataModifier<ItemStack>> clientBoundModifiers = new ArrayList<>();
 
         @Override
         public Builder<ItemStack> id(Key id) {
@@ -110,26 +152,38 @@ public class BukkitCustomItem implements CustomItem<ItemStack> {
         }
 
         @Override
-        public Builder<ItemStack> modifier(ItemModifier<ItemStack> modifier) {
+        public Builder<ItemStack> dataModifier(ItemDataModifier<ItemStack> modifier) {
             this.modifiers.add(modifier);
             return this;
         }
 
         @Override
-        public Builder<ItemStack> modifiers(List<ItemModifier<ItemStack>> list) {
-            this.modifiers.addAll(list);
+        public Builder<ItemStack> dataModifiers(List<ItemDataModifier<ItemStack>> modifiers) {
+            this.modifiers.addAll(modifiers);
             return this;
         }
 
+        @Override
+        public Builder<ItemStack> clientBoundDataModifier(ItemDataModifier<ItemStack> modifier) {
+            this.clientBoundModifiers.add(modifier);
+            return this;
+        }
+
+        @Override
+        public Builder<ItemStack> clientBoundDataModifiers(List<ItemDataModifier<ItemStack>> modifiers) {
+            this.clientBoundModifiers.addAll(modifiers);
+            return null;
+        }
+
         @Override
         public Builder<ItemStack> behavior(ItemBehavior behavior) {
-            this.behavior=  List.of(behavior);
+            this.behaviors.add(behavior);
             return this;
         }
 
         @Override
-        public Builder<ItemStack> behavior(List<ItemBehavior> behaviors) {
-            this.behavior = behaviors;
+        public Builder<ItemStack> behaviors(List<ItemBehavior> behaviors) {
+            this.behaviors.addAll(behaviors);
             return this;
         }
 
@@ -142,7 +196,7 @@ public class BukkitCustomItem implements CustomItem<ItemStack> {
         @Override
         public CustomItem<ItemStack> build() {
             this.modifiers.addAll(this.settings.modifiers());
-            return new BukkitCustomItem(id, materialKey, material, Collections.unmodifiableList(modifiers), behavior, settings);
+            return new BukkitCustomItem(id, materialKey, material, modifiers, clientBoundModifiers, behaviors, settings);
         }
     }
 }
diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitItemManager.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitItemManager.java
index ab17f6790..ff9bc20c4 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitItemManager.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/BukkitItemManager.java
@@ -235,14 +235,14 @@ public class BukkitItemManager extends AbstractItemManager<ItemStack> {
             Key itemModelKey = null;
 
             CustomItem.Builder<ItemStack> itemBuilder = BukkitCustomItem.builder().id(id).material(materialId);
-            itemBuilder.modifier(new IdModifier<>(id));
+            itemBuilder.dataModifier(new IdModifier<>(id));
 
             boolean hasItemModelSection = section.containsKey("item-model");
 
             // To get at least one model provider
             // Sets some basic model info
             if (customModelData != 0) {
-                itemBuilder.modifier(new CustomModelDataModifier<>(customModelData));
+                itemBuilder.dataModifier(new CustomModelDataModifier<>(customModelData));
             }
             // Requires the item to have model before apply item-model
             else if (!hasItemModelSection && section.containsKey("model") && VersionHelper.isVersionNewerThan1_21_2()) {
@@ -250,7 +250,7 @@ public class BukkitItemManager extends AbstractItemManager<ItemStack> {
                 // customize or use the id
                 itemModelKey = Key.from(section.getOrDefault("item-model", id.toString()).toString());
                 if (ResourceLocation.isValid(itemModelKey.toString())) {
-                    itemBuilder.modifier(new ItemModelModifier<>(itemModelKey));
+                    itemBuilder.dataModifier(new ItemModelModifier<>(itemModelKey));
                 } else {
                     itemModelKey = null;
                 }
@@ -258,7 +258,7 @@ public class BukkitItemManager extends AbstractItemManager<ItemStack> {
 
             if (hasItemModelSection) {
                 itemModelKey = Key.from(section.get("item-model").toString());
-                itemBuilder.modifier(new ItemModelModifier<>(itemModelKey));
+                itemBuilder.dataModifier(new ItemModelModifier<>(itemModelKey));
             }
 
             // Get item behaviors
@@ -270,7 +270,7 @@ public class BukkitItemManager extends AbstractItemManager<ItemStack> {
                 for (Map<String, Object> behaviorMap : behavior) {
                     behaviors.add(ItemBehaviors.fromMap(pack, path, id, behaviorMap));
                 }
-                itemBuilder.behavior(behaviors);
+                itemBuilder.behaviors(behaviors);
             } else if (behaviorConfig instanceof Map<?, ?>) {
                 Map<String, Object> behaviorSection = MiscUtils.castToMap(section.get("behavior"), true);
                 if (behaviorSection != null) {
@@ -284,7 +284,7 @@ public class BukkitItemManager extends AbstractItemManager<ItemStack> {
                 for (Map.Entry<String, Object> dataEntry : dataSection.entrySet()) {
                     Optional.ofNullable(dataFunctions.get(dataEntry.getKey())).ifPresent(function -> {
                         try {
-                            itemBuilder.modifier(function.apply(dataEntry.getValue()));
+                            itemBuilder.dataModifier(function.apply(dataEntry.getValue()));
                         } catch (IllegalArgumentException e) {
                             plugin.logger().warn("Invalid data format", e);
                         }
@@ -292,6 +292,20 @@ public class BukkitItemManager extends AbstractItemManager<ItemStack> {
                 }
             }
 
+            // Get item data
+            Map<String, Object> clientSideDataSection = MiscUtils.castToMap(section.get("client-bound-data"), true);
+            if (clientSideDataSection != null) {
+                for (Map.Entry<String, Object> dataEntry : clientSideDataSection.entrySet()) {
+                    Optional.ofNullable(dataFunctions.get(dataEntry.getKey())).ifPresent(function -> {
+                        try {
+                            itemBuilder.clientBoundDataModifier(function.apply(dataEntry.getValue()));
+                        } catch (IllegalArgumentException e) {
+                            plugin.logger().warn("Invalid client bound data format", e);
+                        }
+                    });
+                }
+            }
+
             if (section.containsKey("settings")) {
                 Map<String, Object> settings = MiscUtils.castToMap(section.get("settings"), false);
                 itemBuilder.settings(ItemSettings.fromMap(settings));
diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/ItemEventListener.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/ItemEventListener.java
index f10b37e8a..e5ae2d0ad 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/ItemEventListener.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/item/ItemEventListener.java
@@ -11,6 +11,7 @@ import net.momirealms.craftengine.bukkit.util.*;
 import net.momirealms.craftengine.core.block.ImmutableBlockState;
 import net.momirealms.craftengine.core.entity.player.InteractionHand;
 import net.momirealms.craftengine.core.entity.player.InteractionResult;
+import net.momirealms.craftengine.core.item.CustomItem;
 import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.behavior.ItemBehavior;
 import net.momirealms.craftengine.core.item.context.UseOnContext;
@@ -138,7 +139,12 @@ public class ItemEventListener implements Listener {
             boolean interactable = InteractUtils.isInteractable(BlockStateUtils.getBlockOwnerId(clickedBlock), bukkitPlayer, clickedBlock.getBlockData(), hitResult, itemInHand);
 
             // do not allow to place block if it's a vanilla block
-            if (itemInHand.isBlockItem() && itemInHand.isCustomItem()) {
+            Optional<CustomItem<ItemStack>> optionalCustomItem = itemInHand.getCustomItem();
+            if (itemInHand.isBlockItem() && optionalCustomItem.isPresent()) {
+                // it's a custom item, but now it's ignored
+                if (optionalCustomItem.get().settings().canPlaceRelatedVanillaBlock()) {
+                    return;
+                }
                 if (!interactable || player.isSecondaryUseActive()) {
                     event.setCancelled(true);
                 }
diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/command/feature/TestCommand.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/command/feature/TestCommand.java
index 834abb7b1..0d5724a59 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/command/feature/TestCommand.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/plugin/command/feature/TestCommand.java
@@ -1,16 +1,17 @@
 package net.momirealms.craftengine.bukkit.plugin.command.feature;
 
+import com.saicone.rtag.RtagItem;
 import net.momirealms.craftengine.bukkit.plugin.command.BukkitCommandFeature;
+import net.momirealms.craftengine.core.item.ComponentKeys;
 import net.momirealms.craftengine.core.plugin.CraftEngine;
 import net.momirealms.craftengine.core.plugin.command.CraftEngineCommandManager;
-import org.bukkit.Location;
+import org.bukkit.Material;
 import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
-import org.bukkit.entity.Shulker;
+import org.bukkit.inventory.ItemStack;
 import org.incendo.cloud.Command;
 
-import java.util.Collection;
+import java.util.Map;
 
 public class TestCommand extends BukkitCommandFeature<CommandSender> {
 
@@ -24,16 +25,11 @@ public class TestCommand extends BukkitCommandFeature<CommandSender> {
                 .senderType(Player.class)
                 .handler(context -> {
                     Player player = context.sender();
-                    Location location = player.getLocation();
-                    try {
-                        Collection<Entity> entities = player.getLocation().getNearbyEntities(2,2,2);
-                        for (Entity entity : entities) {
-                            if (entity instanceof Shulker) {
-                            }
-                        }
-                    } catch (Exception e) {
-                        e.printStackTrace();
-                    }
+                    ItemStack itemStack = new ItemStack(Material.STONE);
+                    RtagItem rtagItem = new RtagItem(itemStack);
+                    rtagItem.setComponent(ComponentKeys.CUSTOM_DATA, Map.of("test1", "1"));
+                    rtagItem.setComponent(ComponentKeys.CUSTOM_DATA, Map.of("test2", "2"));
+                    player.getInventory().addItem(rtagItem.load());
                 });
     }
 
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java b/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java
index 12c56a597..bcc2ffa4a 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/AbstractItemManager.java
@@ -24,7 +24,7 @@ public abstract class AbstractItemManager<I> extends AbstractModelGenerator impl
     protected static final Map<Key, List<Holder<Key>>> VANILLA_ITEM_TAGS = new HashMap<>();
 
     protected final Map<String, ExternalItemProvider<I>> externalItemProviders = new HashMap<>();
-    protected final Map<String, Function<Object, ItemModifier<I>>> dataFunctions = new HashMap<>();
+    protected final Map<String, Function<Object, ItemDataModifier<I>>> dataFunctions = new HashMap<>();
     protected final Map<Key, CustomItem<I>> customItems = new HashMap<>();
     protected final Map<Key, List<Holder<Key>>> customItemTags;
     protected final Map<Key, Map<Integer, Key>> cmdConflictChecker;
@@ -37,7 +37,7 @@ public abstract class AbstractItemManager<I> extends AbstractModelGenerator impl
     protected final List<Suggestion> cachedSuggestions = new ArrayList<>();
     protected final List<Suggestion> cachedTotemSuggestions = new ArrayList<>();
 
-    protected void registerDataFunction(Function<Object, ItemModifier<I>> function, String... alias) {
+    protected void registerDataFunction(Function<Object, ItemDataModifier<I>> function, String... alias) {
         for (String a : alias) {
             dataFunctions.put(a, function);
         }
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/ComponentKeys.java b/core/src/main/java/net/momirealms/craftengine/core/item/ComponentKeys.java
index 07779468a..f0205d6ed 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/ComponentKeys.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/ComponentKeys.java
@@ -1,23 +1,24 @@
 package net.momirealms.craftengine.core.item;
 
-import net.kyori.adventure.key.Key;
+import net.momirealms.craftengine.core.util.Key;
 
 public class ComponentKeys {
-    public static final String CUSTOM_MODEL_DATA = Key.key("minecraft", "custom_model_data").asString();
-    public static final String CUSTOM_NAME = Key.key("minecraft", "custom_name").asString();
-    public static final String ITEM_NAME = Key.key("minecraft", "item_name").asString();
-    public static final String LORE = Key.key("minecraft", "lore").asString();
-    public static final String DAMAGE = Key.key("minecraft", "damage").asString();
-    public static final String MAX_DAMAGE = Key.key("minecraft", "max_damage").asString();
-    public static final String ENCHANTMENT_GLINT_OVERRIDE = Key.key("minecraft", "enchantment_glint_override").asString();
-    public static final String ENCHANTMENTS = Key.key("minecraft", "enchantments").asString();
-    public static final String STORED_ENCHANTMENTS = Key.key("minecraft", "stored_enchantments").asString();
-    public static final String UNBREAKABLE = Key.key("minecraft", "unbreakable").asString();
-    public static final String MAX_STACK_SIZE = Key.key("minecraft", "max_stack_size").asString();
-    public static final String EQUIPPABLE = Key.key("minecraft", "equippable").asString();
-    public static final String ITEM_MODEL = Key.key("minecraft", "item_model").asString();
-    public static final String TOOLTIP_STYLE = Key.key("minecraft", "tooltip_style").asString();
-    public static final String JUKEBOX_PLAYABLE = Key.key("minecraft", "jukebox_playable").asString();
-    public static final String TRIM = Key.key("minecraft", "trim").asString();
-    public static final String REPAIR_COST = Key.key("minecraft", "repair_cost").asString();
+    public static final String CUSTOM_MODEL_DATA = Key.of("minecraft", "custom_model_data").toString();
+    public static final String CUSTOM_NAME = Key.of("minecraft", "custom_name").toString();
+    public static final String ITEM_NAME = Key.of("minecraft", "item_name").toString();
+    public static final String LORE = Key.of("minecraft", "lore").toString();
+    public static final String DAMAGE = Key.of("minecraft", "damage").toString();
+    public static final String MAX_DAMAGE = Key.of("minecraft", "max_damage").toString();
+    public static final String ENCHANTMENT_GLINT_OVERRIDE = Key.of("minecraft", "enchantment_glint_override").toString();
+    public static final String ENCHANTMENTS = Key.of("minecraft", "enchantments").toString();
+    public static final String STORED_ENCHANTMENTS = Key.of("minecraft", "stored_enchantments").toString();
+    public static final String UNBREAKABLE = Key.of("minecraft", "unbreakable").toString();
+    public static final String MAX_STACK_SIZE = Key.of("minecraft", "max_stack_size").toString();
+    public static final String EQUIPPABLE = Key.of("minecraft", "equippable").toString();
+    public static final String ITEM_MODEL = Key.of("minecraft", "item_model").toString();
+    public static final String TOOLTIP_STYLE = Key.of("minecraft", "tooltip_style").toString();
+    public static final String JUKEBOX_PLAYABLE = Key.of("minecraft", "jukebox_playable").toString();
+    public static final String TRIM = Key.of("minecraft", "trim").toString();
+    public static final String REPAIR_COST = Key.of("minecraft", "repair_cost").toString();
+    public static final String CUSTOM_DATA = Key.of("minecraft", "custom_data").toString();
 }
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/CustomItem.java b/core/src/main/java/net/momirealms/craftengine/core/item/CustomItem.java
index 916f7a510..9bdde3010 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/CustomItem.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/CustomItem.java
@@ -2,12 +2,13 @@ package net.momirealms.craftengine.core.item;
 
 import net.momirealms.craftengine.core.entity.player.Player;
 import net.momirealms.craftengine.core.item.behavior.ItemBehavior;
-import net.momirealms.craftengine.core.item.modifier.ItemModifier;
+import net.momirealms.craftengine.core.item.modifier.ItemDataModifier;
 import net.momirealms.craftengine.core.util.Key;
 import net.momirealms.craftengine.core.util.context.ContextHolder;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.List;
+import java.util.Map;
 
 public interface CustomItem<I> extends BuildableItem<I> {
 
@@ -15,7 +16,15 @@ public interface CustomItem<I> extends BuildableItem<I> {
 
     Key material();
 
-    List<ItemModifier<I>> modifiers();
+    List<ItemDataModifier<I>> dataModifiers();
+
+    Map<String, ItemDataModifier<I>> dataModifierMap();
+
+    boolean hasClientBoundDataModifier();
+
+    List<ItemDataModifier<I>> clientBoundDataModifiers();
+
+    Map<String, ItemDataModifier<I>> clientBoundDataModifierMap();
 
     ItemSettings settings();
 
@@ -37,13 +46,17 @@ public interface CustomItem<I> extends BuildableItem<I> {
 
         Builder<I> material(Key material);
 
-        Builder<I> modifiers(List<ItemModifier<I>> modifiers);
+        Builder<I> dataModifier(ItemDataModifier<I> modifier);
 
-        Builder<I> modifier(ItemModifier<I> modifier);
+        Builder<I> dataModifiers(List<ItemDataModifier<I>> modifiers);
+
+        Builder<I> clientBoundDataModifier(ItemDataModifier<I> modifier);
+
+        Builder<I> clientBoundDataModifiers(List<ItemDataModifier<I>> modifiers);
 
         Builder<I> behavior(ItemBehavior behavior);
 
-        Builder<I> behavior(List<ItemBehavior> behaviors);
+        Builder<I> behaviors(List<ItemBehavior> behaviors);
 
         Builder<I> settings(ItemSettings settings);
 
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/ItemSettings.java b/core/src/main/java/net/momirealms/craftengine/core/item/ItemSettings.java
index 9a2106eaf..3e5897b11 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/ItemSettings.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/ItemSettings.java
@@ -1,7 +1,7 @@
 package net.momirealms.craftengine.core.item;
 
 import net.momirealms.craftengine.core.item.modifier.EquippableModifier;
-import net.momirealms.craftengine.core.item.modifier.ItemModifier;
+import net.momirealms.craftengine.core.item.modifier.ItemDataModifier;
 import net.momirealms.craftengine.core.pack.misc.EquipmentGeneration;
 import net.momirealms.craftengine.core.util.Key;
 import net.momirealms.craftengine.core.util.MiscUtils;
@@ -19,13 +19,14 @@ public class ItemSettings {
     boolean canRepair = true;
     List<AnvilRepairItem> anvilRepairItems = List.of();
     boolean renameable = true;
+    boolean canPlaceRelatedVanillaBlock = false;
 
     private ItemSettings() {}
 
-    public <I> List<ItemModifier<I>> modifiers() {
-        ArrayList<ItemModifier<I>> modifiers = new ArrayList<>();
+    public <I> List<ItemDataModifier<I>> modifiers() {
+        ArrayList<ItemDataModifier<I>> modifiers = new ArrayList<>();
         if (VersionHelper.isVersionNewerThan1_21_2() && this.equipment != null && this.equipment.modernData() != null) modifiers.add(new EquippableModifier<>(this.equipment.modernData()));
-        // TODO 1.20
+        // TODO 1.20 leather armor
         return modifiers;
     }
 
@@ -45,6 +46,7 @@ public class ItemSettings {
         newSettings.canRepair = settings.canRepair;
         newSettings.anvilRepairItems = settings.anvilRepairItems;
         newSettings.renameable = settings.renameable;
+        newSettings.canPlaceRelatedVanillaBlock = settings.canPlaceRelatedVanillaBlock;
         return newSettings;
     }
 
@@ -60,6 +62,10 @@ public class ItemSettings {
         return settings;
     }
 
+    public boolean canPlaceRelatedVanillaBlock() {
+        return canPlaceRelatedVanillaBlock;
+    }
+
     public boolean canRepair() {
         return canRepair;
     }
@@ -100,6 +106,11 @@ public class ItemSettings {
         return this;
     }
 
+    public ItemSettings canPlaceRelatedVanillaBlock(boolean canPlaceRelatedVanillaBlock) {
+        this.canPlaceRelatedVanillaBlock = canPlaceRelatedVanillaBlock;
+        return this;
+    }
+
     public ItemSettings fuelTime(int fuelTime) {
         this.fuelTime = fuelTime;
         return this;
@@ -175,6 +186,10 @@ public class ItemSettings {
                 );
                 return settings -> settings.equipment(equipment);
             }));
+            registerFactory("can-place", (value -> {
+                boolean bool = (boolean) value;
+                return settings -> settings.canPlaceRelatedVanillaBlock(bool);
+            }));
         }
 
         private static void registerFactory(String id, ItemSettings.Modifier.Factory factory) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ComponentModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ComponentModifier.java
index af953405c..384cc34b6 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ComponentModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ComponentModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.ItemBuildContext;
 
 import java.util.Map;
 
-public class ComponentModifier<I> implements ItemModifier<I> {
+public class ComponentModifier<I> implements ItemDataModifier<I> {
     private final Map<String, Object> arguments;
 
     public ComponentModifier(Map<String, Object> arguments) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/CustomModelDataModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/CustomModelDataModifier.java
index 806faf77e..31a0b3d0b 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/CustomModelDataModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/CustomModelDataModifier.java
@@ -3,7 +3,7 @@ package net.momirealms.craftengine.core.item.modifier;
 import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 
-public class CustomModelDataModifier<I> implements ItemModifier<I> {
+public class CustomModelDataModifier<I> implements ItemDataModifier<I> {
     private final int argument;
 
     public CustomModelDataModifier(int argument) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/DisplayNameModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/DisplayNameModifier.java
index b0c1a95cd..8aa5d2c20 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/DisplayNameModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/DisplayNameModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.plugin.config.Config;
 import net.momirealms.craftengine.core.util.AdventureHelper;
 
-public class DisplayNameModifier<I> implements ItemModifier<I> {
+public class DisplayNameModifier<I> implements ItemDataModifier<I> {
     private final String argument;
 
     public DisplayNameModifier(String argument) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EnchantmentModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EnchantmentModifier.java
index ba9aefb51..f33382b3b 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EnchantmentModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EnchantmentModifier.java
@@ -7,7 +7,7 @@ import net.momirealms.craftengine.core.item.ItemKeys;
 
 import java.util.List;
 
-public class EnchantmentModifier<I> implements ItemModifier<I> {
+public class EnchantmentModifier<I> implements ItemDataModifier<I> {
     private final List<Enchantment> enchantments;
 
     public EnchantmentModifier(List<Enchantment> enchantments) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EquippableModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EquippableModifier.java
index 375ae9646..ddc3aafff 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EquippableModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/EquippableModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.EquipmentData;
 import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 
-public class EquippableModifier<I> implements ItemModifier<I> {
+public class EquippableModifier<I> implements ItemDataModifier<I> {
     private final EquipmentData data;
 
     public EquippableModifier(EquipmentData data) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ExternalModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ExternalModifier.java
index 296810e37..0cf95a6e1 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ExternalModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ExternalModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.plugin.CraftEngine;
 
-public class ExternalModifier<I> implements ItemModifier<I> {
+public class ExternalModifier<I> implements ItemDataModifier<I> {
     private final String id;
     private final ExternalItemProvider<I> provider;
 
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/IdModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/IdModifier.java
index ba00849b2..1a2e35715 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/IdModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/IdModifier.java
@@ -4,7 +4,7 @@ import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.util.Key;
 
-public class IdModifier<I> implements ItemModifier<I> {
+public class IdModifier<I> implements ItemDataModifier<I> {
     public static final String CRAFT_ENGINE_ID = "craftengine:id";
     private final Key argument;
 
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemDataModifier.java
similarity index 86%
rename from core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModifier.java
rename to core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemDataModifier.java
index d98c3992a..c9ce5259f 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemDataModifier.java
@@ -3,7 +3,7 @@ package net.momirealms.craftengine.core.item.modifier;
 import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 
-public interface ItemModifier<I> {
+public interface ItemDataModifier<I> {
 
     String name();
 
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModelModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModelModifier.java
index 973badeee..5fb400aa1 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModelModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemModelModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.util.Key;
 
-public class ItemModelModifier<I> implements ItemModifier<I> {
+public class ItemModelModifier<I> implements ItemDataModifier<I> {
     private final Key data;
 
     public ItemModelModifier(Key data) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemNameModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemNameModifier.java
index 624941d51..ba438cc9f 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemNameModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/ItemNameModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.plugin.config.Config;
 import net.momirealms.craftengine.core.util.AdventureHelper;
 
-public class ItemNameModifier<I> implements ItemModifier<I> {
+public class ItemNameModifier<I> implements ItemDataModifier<I> {
     private final String argument;
 
     public ItemNameModifier(String argument) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/JukeboxSongModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/JukeboxSongModifier.java
index 6c4aa4080..04ebde7e7 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/JukeboxSongModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/JukeboxSongModifier.java
@@ -8,7 +8,7 @@ import net.momirealms.craftengine.core.util.VersionHelper;
 
 import java.util.Map;
 
-public class JukeboxSongModifier<I> implements ItemModifier<I> {
+public class JukeboxSongModifier<I> implements ItemDataModifier<I> {
     private final Key song;
 
     public JukeboxSongModifier(Key song) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/LoreModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/LoreModifier.java
index 7d8e5d1ae..356b09c83 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/LoreModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/LoreModifier.java
@@ -7,7 +7,7 @@ import net.momirealms.craftengine.core.util.AdventureHelper;
 
 import java.util.List;
 
-public class LoreModifier<I> implements ItemModifier<I> {
+public class LoreModifier<I> implements ItemDataModifier<I> {
     private final List<String> argument;
 
     public LoreModifier(List<String> argument) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TagsModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TagsModifier.java
index 06942fa79..f3744d975 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TagsModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TagsModifier.java
@@ -8,7 +8,7 @@ import net.momirealms.craftengine.core.util.TypeUtils;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
-public class TagsModifier<I> implements ItemModifier<I> {
+public class TagsModifier<I> implements ItemDataModifier<I> {
     private final Map<String, Object> arguments;
 
     public TagsModifier(Map<String, Object> arguments) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TooltipStyleModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TooltipStyleModifier.java
index dafcde51e..9bf55c19e 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TooltipStyleModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TooltipStyleModifier.java
@@ -5,7 +5,7 @@ import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 import net.momirealms.craftengine.core.util.Key;
 
-public class TooltipStyleModifier<I> implements ItemModifier<I> {
+public class TooltipStyleModifier<I> implements ItemDataModifier<I> {
     private final Key argument;
 
     public TooltipStyleModifier(Key argument) {
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TrimModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TrimModifier.java
index 09086a956..ed560d4af 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TrimModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/TrimModifier.java
@@ -7,7 +7,7 @@ import net.momirealms.craftengine.core.util.VersionHelper;
 
 import java.util.Map;
 
-public class TrimModifier<I> implements ItemModifier<I> {
+public class TrimModifier<I> implements ItemDataModifier<I> {
     private final String material;
     private final String pattern;
 
diff --git a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/UnbreakableModifier.java b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/UnbreakableModifier.java
index 90cc19fba..20c998cd4 100644
--- a/core/src/main/java/net/momirealms/craftengine/core/item/modifier/UnbreakableModifier.java
+++ b/core/src/main/java/net/momirealms/craftengine/core/item/modifier/UnbreakableModifier.java
@@ -3,7 +3,7 @@ package net.momirealms.craftengine.core.item.modifier;
 import net.momirealms.craftengine.core.item.Item;
 import net.momirealms.craftengine.core.item.ItemBuildContext;
 
-public class UnbreakableModifier<I> implements ItemModifier<I> {
+public class UnbreakableModifier<I> implements ItemDataModifier<I> {
     private final boolean argument;
 
     public UnbreakableModifier(boolean argument) {
diff --git a/server-mod/src/main/java/net/momirealms/craftengine/mod/CraftEngineBlock.java b/server-mod/src/main/java/net/momirealms/craftengine/mod/CraftEngineBlock.java
index 200eeb700..f7d481ee7 100644
--- a/server-mod/src/main/java/net/momirealms/craftengine/mod/CraftEngineBlock.java
+++ b/server-mod/src/main/java/net/momirealms/craftengine/mod/CraftEngineBlock.java
@@ -17,7 +17,6 @@ import net.minecraft.world.phys.shapes.VoxelShape;
 import net.momirealms.craftengine.mod.util.NoteBlockUtils;
 import net.momirealms.craftengine.shared.ObjectHolder;
 import net.momirealms.craftengine.shared.block.*;
-import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
 public class CraftEngineBlock