Eight punch cards are provided - Princess Leia, Luke Skywalker, Chewie, Hans Solo, Darth Vader, 3CPO, R2D2, Yoda. I like to run them on colored paper. each child in my class gets one. I reward them with punches for a variety of behaviors that I wish to encourage - quiet and ready, homework completion, quality work, good answers, etc. When the punch cards are filled, they can trade it for a prize.