About every three weeks on a Thursday, students bring their CODE cards to lunch and deposit them into a raffle tub. At that time, they get a piece of candy of their choice. 30 names are drawn from the tub and the next day at lunch, those students can pick from items like gum, chips, "Go-to-lunch-2-minutes-early" passes, juice boxes, Newton gear, and much more. We always need parent volunteers to help us run the Shack during lunches.
At the end of each quarter, students can use their CODE cards like money. Different items with be "worth" a certain number of CODE cards like a soda could cost 4 CODE cards. This gives every student an opportunity to be rewarded, and for the students that receive numerous cards, they can spend them all meaningfully if they wish.
At the end of each quarter, teachers can turn in 6 CODE cards for rewards like breakfast burritos, coffee, etc.