For this semester, we decided to take the door prize concept up a notch. I purchased a "treasure chest" box from Oriental Trading, and I put a greater variety of prizes in the box. The kids are loving it. I have all of their names in a jar. I draw names for two minutes at the beginning of each Wednesday evening. If the kid is present in the room, he/she gets to come select a door prize. This silly activity has helped increase our punctuality tremendously.