Classroom Bingo! This is a whole class reward system. When the class displays a positive behavior a number is pulled from a hat. That number is then covered up. When the class has five in a row they win an award!
Gem Jar whole class reward system. When whole class does something remarkable, I put a gem in the jar. Image fro, google, laminated and stuck on whiteboard. Gems from cheap shop, magnet tape on the back