I like this traffic light behaviour management chart because it helps students with self-regulation. When children are misbehaving or make a bad choice, they will move their peg down a level. They will also have the chance to move up a level if their behaviour improves during the day. At the end of the day, they could colour in a face in their agenda to go home, which also communicates with parents the kind of day that their child had at school.
Cool Down Cubes - great for students who have difficulty with anger. Using a permanent marker, write a safe "cool down" strategy on each ice cube. For example: count to ten, walk away, talk to a friend, take three deep breaths, etc. I also left a few of the cubes blank so that the students could come up with their own strategies.