In my classroom, I will be handing out tickets to students who do more than what is expected of them. I shouldn't have to reward students with external things, but hey, it's middle school. Sometimes they need that extra push of motivation. Plus, all the coupons I'm handing out are free stuff besides the eating and drinking in class. I will have snacks for them if they don't bring any.
It's on powerpoint slides and you can make them whatever size you want. It's totally editable. Hope this makes your life easier!