For good behavior in my classroom, I pass out coupons. This could be for a student who has materials ready to go right away, for a stand-out answer to a question I've asked or simply an organized desk. The students never know when I will have the coupons in my pocket. They can put their coupons in our raffle jar. I choose three students out of the jar each Friday and they are able to pick a trinket from my treasure box.