• Allay texture and model matches bedrock
• Allays spawn in cages in pillager outposts and woodland mansions
• Allay GameEvent listener for noteblocks
• When the Allay is given an item, it will search for the same item on the ground and go pick it up
• If an Allay holds an item it got from a player, it will follow that player
• The Allay is able to drop items at nearby Note Blocks
• When playing a Note Block near an Allay, that Note Block becomes the Allays favourite Note Block for 30 seconds, and the Allay will attempt to drop off items at the Note Block rather than at the player
• If an Allay has items in its inventory, it will attempt to give them to its owner

the first one should maybe be easy.