This is the reward system I’ve been using in my room and it has been working wonderfully. Each class gets a crayon box with their teacher’s name written in the red banner. If they earn 16 crayons in their box, they get a free art day where they can vote on a few art supplies to use for the day and make pretty much whatever their little hearts desire.
But they have to really EARN them. I have a “did we earn a crayon today?” box below it that you probably can’t read well in the photo, but it outlines what kind of behavior I expect from the class. They must enter, listen, work, clean up, and exit nicely and respectfully to earn one.
Saying “we only have X minutes left. I think you have earned a crayon so far, can you keep working this hard and keep it?” gets the students to work hard. I only put in a crayon after they leave since they have to exit in a quiet and orderly way to earn it and also because I don’t want any students getting upset because they did not get one. This is especially important for my ED classes because they can actually have some serious meltdowns over these little things. For the ED classes, I have sticker charts with rewards for each individual student where they can earn 4 stickers to get something in the prize box or keep the 4 and get up to 8 for 10 minutes of free art time. So far, only one class has had students eligible for the prize box and thank goodness they loved what was in there! :)