I have done marbles and fuzzy pom-poms in a jar every time the class receives a compliment or does something I feel deserves recognition. I have seen paper chains that you start at the ceiling and try to get them to reach the floor and then the class earns a reward. I have also seen the class earn pieces of a puzzle. What other ideas do you use as whole class rewards? I am looking for something new and creative, but I'm stumped.