I created a series of 16 colorful passes that could be printed and laminated for student use. The rewards include things proven important to middle school students, such as free app time or headphones allowed during personal work time.
The best part is that they require you to BUY NOTHING! Rather than spending precious PTO dollars on giveaways for students, use the "experience" passes where students get choice as well.
I am planning to print about 6 total copies for my 75 students, and cut and laminate to have as a reward tackle box for attendance and behavior reinforcement.