diff --git a/invui/src/main/java/xyz/xenondevs/invui/inventory/Inventory.java b/invui/src/main/java/xyz/xenondevs/invui/inventory/Inventory.java
index 2ffc44a..dc15924 100644
--- a/invui/src/main/java/xyz/xenondevs/invui/inventory/Inventory.java
+++ b/invui/src/main/java/xyz/xenondevs/invui/inventory/Inventory.java
@@ -50,8 +50,8 @@ import java.util.stream.Stream;
 public abstract class Inventory {
     
     private final Set<AbstractWindow> windows = new HashSet<>();
-    private Consumer<ItemPreUpdateEvent> itemUpdateHandler;
-    private Consumer<ItemPostUpdateEvent> inventoryUpdatedHandler;
+    private Consumer<ItemPreUpdateEvent> preUpdateHandler;
+    private Consumer<ItemPostUpdateEvent> postUpdateHandler;
     private int guiPriority = 0;
     
     /**
@@ -178,13 +178,31 @@ public abstract class Inventory {
         windows.forEach(window -> window.handleInventoryUpdate(this));
     }
     
+    /**
+     * Gets the configured pre update handler.
+     *
+     * @return The pre update handler
+     */
+    public @Nullable Consumer<ItemPreUpdateEvent> getPreUpdateHandler() {
+        return preUpdateHandler;
+    }
+    
     /**
      * Sets a handler which is called every time something gets updated in the {@link Inventory}.
      *
-     * @param itemUpdateHandler The new item update handler
+     * @param preUpdateHandler The new item update handler
      */
-    public void setPreUpdateHandler(Consumer<ItemPreUpdateEvent> itemUpdateHandler) {
-        this.itemUpdateHandler = itemUpdateHandler;
+    public void setPreUpdateHandler(@NotNull Consumer<@NotNull ItemPreUpdateEvent> preUpdateHandler) {
+        this.preUpdateHandler = preUpdateHandler;
+    }
+    
+    /**
+     * Gets the configured post update handler.
+     *
+     * @return The post update handler
+     */
+    public @Nullable Consumer<@NotNull ItemPostUpdateEvent> getPostUpdateHandler() {
+        return postUpdateHandler;
     }
     
     /**
@@ -192,27 +210,27 @@ public abstract class Inventory {
      *
      * @param inventoryUpdatedHandler The new handler
      */
-    public void setPostUpdateHandler(Consumer<ItemPostUpdateEvent> inventoryUpdatedHandler) {
-        this.inventoryUpdatedHandler = inventoryUpdatedHandler;
+    public void setPostUpdateHandler(@NotNull Consumer<@NotNull ItemPostUpdateEvent> inventoryUpdatedHandler) {
+        this.postUpdateHandler = inventoryUpdatedHandler;
     }
     
     /**
-     * Creates an {@link ItemPreUpdateEvent} and calls the {@link #itemUpdateHandler} to handle it.
+     * Creates an {@link ItemPreUpdateEvent} and calls the {@link #preUpdateHandler} to handle it.
      *
      * @param updateReason      The {@link UpdateReason}.
      * @param slot              The slot of the affected {@link ItemStack}.
      * @param previousItemStack The {@link ItemStack} that was previously on that slot.
      * @param newItemStack      The {@link ItemStack} that will be on that slot.
-     * @return The {@link ItemPreUpdateEvent} after it has been handled by the {@link #itemUpdateHandler}.
+     * @return The {@link ItemPreUpdateEvent} after it has been handled by the {@link #preUpdateHandler}.
      */
     public ItemPreUpdateEvent callPreUpdateEvent(@Nullable UpdateReason updateReason, int slot, @Nullable ItemStack previousItemStack, @Nullable ItemStack newItemStack) {
         if (updateReason == UpdateReason.SUPPRESSED)
             throw new IllegalArgumentException("Cannot call ItemUpdateEvent with UpdateReason.SUPPRESSED");
         
         ItemPreUpdateEvent event = new ItemPreUpdateEvent(this, slot, updateReason, previousItemStack, newItemStack);
-        if (itemUpdateHandler != null) {
+        if (preUpdateHandler != null) {
             try {
-                itemUpdateHandler.accept(event);
+                preUpdateHandler.accept(event);
             } catch (Throwable t) {
                 InvUI.getInstance().getLogger().log(Level.SEVERE, "An exception occurred while handling an inventory event", t);
             }
@@ -221,7 +239,7 @@ public abstract class Inventory {
     }
     
     /**
-     * Creates an {@link ItemPostUpdateEvent} and calls the {@link #inventoryUpdatedHandler} to handle it.
+     * Creates an {@link ItemPostUpdateEvent} and calls the {@link #postUpdateHandler} to handle it.
      *
      * @param updateReason      The {@link UpdateReason}.
      * @param slot              The slot of the affected {@link ItemStack}.
@@ -233,9 +251,9 @@ public abstract class Inventory {
             throw new IllegalArgumentException("Cannot call InventoryUpdatedEvent with UpdateReason.SUPPRESSED");
         
         ItemPostUpdateEvent event = new ItemPostUpdateEvent(this, slot, updateReason, previousItemStack, newItemStack);
-        if (inventoryUpdatedHandler != null) {
+        if (postUpdateHandler != null) {
             try {
-                inventoryUpdatedHandler.accept(event);
+                postUpdateHandler.accept(event);
             } catch (Throwable t) {
                 InvUI.getInstance().getLogger().log(Level.SEVERE, "An exception occurred while handling an inventory event", t);
             }
diff --git a/invui/src/main/java/xyz/xenondevs/invui/inventory/VirtualInventory.java b/invui/src/main/java/xyz/xenondevs/invui/inventory/VirtualInventory.java
index 15b6d00..5191cd2 100644
--- a/invui/src/main/java/xyz/xenondevs/invui/inventory/VirtualInventory.java
+++ b/invui/src/main/java/xyz/xenondevs/invui/inventory/VirtualInventory.java
@@ -13,6 +13,7 @@ import java.util.UUID;
 
 /**
  * A serializable {@link Inventory} implementation that is identified by a {@link UUID} and backed by a simple {@link ItemStack} array.
+ *
  * @see VirtualInventoryManager
  */
 public class VirtualInventory extends Inventory {
@@ -25,9 +26,9 @@ public class VirtualInventory extends Inventory {
     /**
      * Constructs a new {@link VirtualInventory}
      *
-     * @param uuid       The {@link UUID} of this {@link VirtualInventory}. Can be null, only used for serialization.
-     * @param size       The amount of slots this {@link VirtualInventory} has.
-     * @param items      A predefined array of content. Can be null. Will not get copied!
+     * @param uuid          The {@link UUID} of this {@link VirtualInventory}. Can be null, only used for serialization.
+     * @param size          The amount of slots this {@link VirtualInventory} has.
+     * @param items         A predefined array of content. Can be null. Will not get copied!
      * @param maxStackSizes An array of maximum allowed stack sizes for each slot in the {@link VirtualInventory}. Can be null for 64.
      * @throws IllegalArgumentException If the given size does not match the length of the items array or the length of the stackSizes array.
      */
@@ -52,8 +53,8 @@ public class VirtualInventory extends Inventory {
     /**
      * Constructs a new {@link VirtualInventory}
      *
-     * @param size       The amount of slots this {@link VirtualInventory} has.
-     * @param items      A predefined array of content. Can be null. Will not get copied!
+     * @param size          The amount of slots this {@link VirtualInventory} has.
+     * @param items         A predefined array of content. Can be null. Will not get copied!
      * @param maxStackSizes An array of maximum allowed stack sizes for each slot in the {@link VirtualInventory}. Can be null for 64.
      */
     public VirtualInventory(int size, @Nullable ItemStack @Nullable [] items, int @Nullable [] maxStackSizes) {
@@ -63,8 +64,8 @@ public class VirtualInventory extends Inventory {
     /**
      * Constructs a new {@link VirtualInventory}
      *
-     * @param uuid       The {@link UUID} of this {@link VirtualInventory}. Can be null, only used for serialization.
-     * @param items      A predefined array of content. Will not get copied!
+     * @param uuid          The {@link UUID} of this {@link VirtualInventory}. Can be null, only used for serialization.
+     * @param items         A predefined array of content. Will not get copied!
      * @param maxStackSizes An array of maximum allowed stack sizes for each slot in the {@link VirtualInventory}. Can be null for 64.
      */
     public VirtualInventory(@Nullable UUID uuid, @Nullable ItemStack @NotNull [] items, int @Nullable [] maxStackSizes) {
@@ -74,7 +75,7 @@ public class VirtualInventory extends Inventory {
     /**
      * Constructs a new {@link VirtualInventory}
      *
-     * @param items      A predefined array of content. Will not get copied!
+     * @param items         A predefined array of content. Will not get copied!
      * @param maxStackSizes An array of maximum allowed stack sizes for each slot in the {@link VirtualInventory}. Can be null for 64.
      */
     public VirtualInventory(@Nullable ItemStack @NotNull [] items, int @Nullable [] maxStackSizes) {
@@ -103,7 +104,7 @@ public class VirtualInventory extends Inventory {
     /**
      * Constructs a new {@link VirtualInventory}
      *
-     * @param uuid       The {@link UUID} of this {@link VirtualInventory}. Can be null, only used for serialization.
+     * @param uuid          The {@link UUID} of this {@link VirtualInventory}. Can be null, only used for serialization.
      * @param maxStackSizes An array of maximum allowed stack sizes for each slot in the {@link VirtualInventory}.
      */
     public VirtualInventory(@Nullable UUID uuid, int @NotNull [] maxStackSizes) {
@@ -138,6 +139,18 @@ public class VirtualInventory extends Inventory {
         this(null, size, null, null);
     }
     
+    /**
+     * Creates a copy of the given {@link VirtualInventory}.
+     *
+     * @param inventory The {@link VirtualInventory} to copy.
+     */
+    public VirtualInventory(VirtualInventory inventory) {
+        this(inventory.uuid, inventory.size, ItemUtils.clone(inventory.items), inventory.maxStackSizes.clone());
+        setGuiPriority(inventory.getGuiPriority());
+        setPreUpdateHandler(inventory.getPreUpdateHandler());
+        setPostUpdateHandler(inventory.getPostUpdateHandler());
+    }
+    
     /**
      * Deserializes a {@link VirtualInventory} from a byte array.
      *