Wristbands????

Coach, we put 70 plays on our wristbands. I use microsoft publisher to make the wristband insterts. We switch them up each week to rearrange the numbers. We laminate the sheets so that they don't get torn up/waterlogged/etc during the game. Each player on the field wears a wristband and they check the wristbands. We hand signal formation/motion and then yell in the play number.

Towards the end of the year we started making two different wristbands each week and we would switch them at halftime if teams were trying to match our numbers up to plays.