Hats

You could add a new drop from husks called the cowboy hat and one from strays called the beanie and one from witches called the witches hat you could also add villager hats as trade items for villagers then you could make the witches hat give the opponent a random effect when you hit them enough times.

the cowboy hat could give you more bow damage and the beanie could make you immune to freezing. The villager hat could give you hero of the village for that profession of villager hat. But best is a boss drop from the warden that gives you the ability to detect sound like the warden and basicly see enemies through walls by making them glow. You would obtain this by combining a netherite helmet, warden ears (the drop) and a skulk smithing upgrade (found rarely in ancient cities) in a smithing table to get the item. This would give the same protection as a netherite helmet and knockback resistance the same as netherite.