Hello!
Once a week I choose "star student." The students all have personal goals to reach when they do, they can become star student! (of course on top of following all class rules and bringing in homework). The star student gets a small prize, they get to pick their job for a week, wear a special star student medal, get their picture on a board, and sit on a pillow while were at carpet time. They also get to pick our daily snack for the week! They are all competing for it! I had this one student who was a tantrum king. After he saw all his friends become star student and saw what a big deal it was to earn it, he asked me what he can do to become star student. I spoke to him about his calling out, and tantrums that are not appropriate. We spoke about other ways to handle his emotions and I have to say, this week might be his week to get it, I've seen a 180 turn in him! Make other students the example, show the students what they need to act like in order to get such an award!
Hope this helps

(it also helps reward the students who are working really hard and deserve it)