Bingo Baker makes it easy to create bingo cards. You can generate hundreds of random cards and print them using the printer-friendly PDF (with no ads or watermarks). You can also save paper (and waste electricity instead) by playing your bingo game online (it works on the iPad).
At the beginning of every month, everyone starts off in the homework club. If they turn all their homework in on time, then they get to stay in the club! If they don't then they are out of the club. Students who turn all their homework in for the entire month get to come to the monthly homework club lunch.
Another pinner said: There is an envelope laminated for each assignment due. I started with ten. I can just write the activity on the envelope and the kids go there to turn it in. Then they check off their name on the back. So I know exactly who didn't turn it in. It also makes things so much easier to grade!