My students love talking to puppets and I've never had to worry about preparing elaborate reward charts or extra props for a reward system.
If the student behaves well during the lesson I tell them that they can finish up with a puppet chat. It's been a successful reward system for years!
The Pubbets Project was successfully funded on the IndieGoGo platform in September 2018! You can get your very own pubbet at www.pubbets.net and join our free online training group at the Pubbets Academy here: www.facebook.com/groups/pubbets