Who doesn't like a nice, lazy, chubby Panda and a nice, sweet piece of candy?
Now put the two together...
Panda Candy can be used as positive OR negative reinforcement of correct answers or behaviour.
If they students behave as expected, they can feed a piece of candy to the panda. Each time he eats, he grows!
If you want to use it to "punish" the students, need the candy to the panda each time they misbehave/give the wrong answer and, once he has had too many pieces of candy, he will pop!!