How to handle with a utility item that is meant to "contain" two other items? in Modder Support Posted February 18 · Edited February 18 by Xander402 7 minutes ago, Draco18s said: That is not how that was ever meant to be used. Yeah, I know that too, because it simply does what you said: 7 minutes ago, Draco18s said: This will permanently change the container item (until your recipe comes along and changes it again). Every other recipe using the item will return a copy. But I haven't found any other method for putting an item in the crafting grid after grabbing the output, that's just why I used setContainerItem(). I would be happy to know if there is one that would solve my problem.