Unless you have the perfect classroom with the perfect students; you have kids who don't turn their homework in on time. I created these to help with accountability. Kids either turn in their homework or they turn in their No Homework Slip but everyone gives me something. The best thing about this is when parents come to conference with you because you now have documentation that the student is turning in late work and it's even in their child's handwriting!
Another way I use this is as a checklist for missing work. I keep all slips in an envelope until the child turns it in. This helps so I know who needs to have fun doing academic games and who needs to be making up missing work. All you do is whip these babies out and read out the list of who will not be playing games or going to recess or whatever discipline measures you choose to take.
Hope you find this useful!