You know what's better than candy for students? Bonus point vouchers...
Students could earn bonus points during various activities in my class. I would print this template on different color paper and cut them out to have on hand whenever I needed them. I used this for language arts but it could be adjusted for any class.
Before giving to the student, I would write his/her name in the upper left corner as a way of knowing that they received it from me. Bonus points could be used throughout the year. If a student lost his/her bonus point voucher, they would not receive a replacement.