Fluttering Through First Grade: Bathroom policy - students make a tally in the box with their number every time they go to the bathroom. This way you don't have to deny anyone who actually needs to go, but you have a record for both the student and their parents if someone is going too often.
@braininsights this looks right up your alley! Free downloadable pattern for a paper "Brain Hat!" (Here is the direct link to the color pattern: http://www.ellenjmchenry.com/homeschool-freedownloads/lifesciences-games/documents/BrainHatColor.pdf)