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.
How this teacher manages: instead of having classroom jobs, she had a boy and girl “helping hand” of the day. The two helpers were responsible for all of the classroom jobs (line leader, door holder, running errands, etc.) Just write each students’.