In my second grade classroom, we use a reward sytem of cash and coupons they can buy with the cash. They receive character cash ($1,$5,$10,$20) for various things they turn in and for great behavior and character. Our mascot is the knight as we are the "Nike Knights" so there is a picture of a knight on the cash and the words: Second Grade Character Cash". There are a number of coupons and a list of how much each coupon is worth. My second grade students developed this list of choices and how much each coupon is worth. Your class may want to change this...as my class makes changes each year. Each Friday is "payday" and "buying day" is Friday also.