Going to put something here again. I forgot to mention that the non-food item that chickens enjoy the most would be sticks. Yes, sticks. Chickens, especially bantams, want to have things to climb on and it is good for them to practice their balance, jumping and flight. Branches can be put in their pen if they are confined. If they are free-ranged, you can build something to hold the branches (but do not expect free-ranged chickens to like using branches as much as those confined, since they have more to do). And if you want to go even further with building for confined chickens, you can use random pieces of spare wood you have to make some sort of climbing toy for them!