We have our own banks that we save up our puppy pounds in. Then on a Friday Miss Prentice opens a shop with Stationary (£5) , Lucky dip (£10) , Marbles (£2) and Certificates/Stickers (£10). We have a jar to put marbles in and when it is full we get a whole class treat of our choice.
We have recently filled the marble jar so our class has decided on having a party with no uniform and lots of party food!
I think the puppy pounds is a good behaviour system because it makes people want to be good so they can get puppy pounds and buy stuff from the shop and get marble jar treats.