Minecraft wiki entry for Block_and_item_duplication, associated text: This dupe involves baby piglins. It is incredibly simple and it works in multiplayer. To perform this glitch find a baby piglin and drop his health down to a 1-hit kill (2 hits with a normal diamond sword should work). Then drop the item you want to duplicate to the piglin(e.g. a shulker box) then wait for the baby piglin to pick it up. After the piglin has picked up the item drop the piglin 1 gold ingot. While the piglin is admiring the gold, kill the piglin.