I use a homework lotto to get my students to submit homework in a timely fashion. I made a grid with a letter and number assigned to each square. If students submit a complete and neat assignment on time, they get to sign their name in one of the boxes of the homework lotto grid. When the grid is filled up, it's lotto time! Fifty lucky students get called at random (e.g., V2�Sam, C18� Sue, etc.) for a lotto prize.