this code that I borrowed, I was able to create a batting order rotator for my son's Tee Ball team.
You can see it in action here.
I can see how this might be useful for elementary classes that want to rotate line leader and class jobs frequently through the day etc. etc. and also possibly in high school for seating charts (although there's other programs for that--usually attached to your grade book program) or for lab work in science class and things of that nature.