Help with Cleaning up the Classroom

I usually need reminders of good ideas, and this is one I've heard many times before but always seem to forget when the classroom is messiest. 


Play secret scrap.  Tell kids that there is a certain piece of garbage or debris on the ground and that you will reward the student who picks it up with a prize.  (Sticker, pencil, etc)  This little trick usually gets every piece of everything picked up off the floor and you don't have to try to find the broom or crawl around the floor picking everything up while trying to leave on time.