Print on cardstock, laminate, attach a paperclip, and you're ready to go!
I use this behavior card whenever I work with small groups. The students keep one inside their folder with a paperclip attached to it. They take it out every day before we start our small group.
I use these as an individual clip-up/clip-down system. I also have the students track their behavior every day on a calendar. This can help them track their own behavior, or it can be used to track the progress to earning a reward.