Think sheet. Have the student fill this out when they have broken a classroom rule or hurt the feelings of another student, have the student reflect on their behavior and then fix the situation. I like this because it lets them think of alternatives rather than just apologizing and moving on.
When you say "fist to five check" students rate their understanding by holding up the appropriate number of fingers. The goal is for everyone to be in the green. Great way for students to self-assess their understanding and help you to gauge student understanding.