Each time a homework assignment is successfully completed on time, student will choose a square on the board and write their initials. Once the board is filled, teachers can hold a class raffle and call off squares on the board.
For this part I have two small baskets with the letters A-O in one and another basket with the numbers 1-10. I usually pick three students but more or less would work depending on your class size. Raffle prizes I have used in the past include erasers, pencils, homework pass, stickers, puzzles, etc...
I have found the raffles motivate students into making sure their work is turned in on time! There is a high level of anticipation and excitement as students realize the board is getting nearly filled.