miller
No I don't have a banana shaped punch, but I am going to buy a puncher that is a different shape (I've seen them at the dollar store and they come in all different shapes and characters).
The students' reward is a roll on homeworkopoly (which is only played on Fridays).
They earn different rewards like Jungle Bucks (my classroom store), free homework passes, candy, treasure box treats, sit next to a friend, eat with teacher at lunch, etc.