Recently someone released a client mod called All-U-WANT and it is getting pretty popular, I'm having issues with some ranked members on my server who have creative using it to spawn items with custom lore, colorful titles, and custom NBT tags that they shouldn't be able to modify. Is there any way to detect when a new item is spawned via the creative inventory? I've looked around and all I found was the ability to see if an item is placed but this is no good since the player could pick up an item in their inventory and move it to a new slot to trigger it. EDIT: I might of posted this in the wrong area, I was thinking "Plugin Help" as plugin development help. I'm thinking about just creating a HashMap that contains the player name and the ItemStack to allow them to move item around without it being removed.