I use a penny board. I give each of my students five pennies on velcro. If they make a bad choice. I ask him/her to show me a good kindergarten choice. If he/she hasn't corrected the behavior, a penny is taken from him/her. If they keep all the five pennies at the end of the day my children know that when they arrive the next morning a big sticker will be given to them. I have seasonal shapes hanging on my curtain that they stick the sticker on. When they have 15 stickers, they are given the opportunity to buy something at the store. I have collect small items all summer and have placed them in a four drawer filing cabinet. The child chooses one item for their 15 stickers. This teaches them the concept you must work for what you want. It helps them have good self esteem because they know they can be excited and share the news about how they kept their pennies. I had one child that had such rage that he caused quite a problem. However, this procedure has changed him completely and everyday I hear, "Mrs. Bell I'm going to have a good day!" What's great about it that he accomplishes it. The children know that if they hurt another child on purpose they lose all the pennies. Try it teachers, it works!