NOISE…removing one letter at a time when our voice level gets too loud. When NO is left, there is NO more talking! Love this! A lot more clearer than just putting up strikes on the board or letting the noise escalate to a point where you just cut off talking. It also gives the kids a chance to regain control of their noise before it gets to that point.
I really like something like this for homework. Place on a clip board and carry it with me while I'm quickly checking reading logs. If a student doesn't have their HW, give them the clipboard to fill out, and they can pass it to the next student when they're finished.