An Allay is a new mob introduced in the Wild Update of Minecraft. It is a tiny, ghost-like creature that players can befriend by giving it an item. Once befriended, the Allay will collect more copies of that item and bring them back to the player. The Allay can only collect dropped items, so it cannot find items that have not yet been mined. The Allay can be useful in situations such as mob farms, where it can collect only the loot the player wants, or when mining, where it can clean up materials left behind by TNT. To find an Allay, players need to look for them in pillager outposts or woodland mansions. To breed Allays, players need to give them amethyst shards while a jukebox is playing nearby.