Quick and Easy?

I watched a video on a Joe Bower post on how one school used cash rewards to get kids to achieve, attend, etc. This video reminds me of a conversation I had recently with a teacher colleague who stated that "Alfie Kohn had it all wrong... that all students need some carrot to achieve..." Made me wonder what kind of reward he was talking about. What are the rewards in your classroom that get kids to work, attend, achieve, ... oh yea... and to learn?