I use this store menu to reward my class each month. Throughout the month, I give my students money each day based on where they end up on our clip chart. I made money with my picture on it using this website: http://www.festisite.com/money/us_dollar_1/
If they stay on green (Ready to Learn) they get $1. If they move up to Good Day or Great Day they get $2. If they reach Outstanding they get $5.
At the end of each month, students can use the money they have collected towards any of these store items. They can choose to use all of the money on various prizes, buy something small and save the rest, save all their money, or work with the entire class to buy a whole class reward.
The coupons I give to students when they buy a prize can also be found in my TpT store.