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.
Runde's Room: Differentiation in Writing - Goal-Setting Clip Chart! A neat thing to have in your room so that students have a way to be responsible for their writing goals. Students will want to be able to move their pins up.