My teacher uses a Noise Meter similar to this one. The Noise Meter is a cool way to remind students the correct noise level that they should be using! You just use the paper clip and move it to the appropriate noise level the students should be using.
Love this! Nameless papers drive me crzay! Easy and adorable. No Name board. Clip papers that don't have names on them to the board and have students go check there instead of spending your time trying to figure out who they belong to!