These can be printed on colored cardstock and have different amounts of punches required to earn a reward. Some of the rewards I use are eating lunch with that student, treasure chest, being a helper for another teacher for a little while, using a pen for a day, etc. I carry a hole punch in my pocket and students know that they are responsible for their cards. If they lose their card, they start over. These are nice because not only can I change out the reward every time they fill a card, but some of the cards have more stars than others. Students who struggle to earn punches I will give less stars and students who are almost always doing a great job have to earn more!