Use these as the students Dojo reward. Each time a student uses their dojo points to buy a reward, give them a laminated slip that they may turn in to use their reward. In my class I printed each reward a different color, and laminated them for multiple uses. Each time a student spends their Dojo, I hand them a slip and tell them when they want to use their reward, they must turn their laminated card back into me. It has been a great way to keep the kids accountable for their own rewards, and keeps me from forgetting who has earned what!