For my super hero theme this year, a noise level chart to teach appropriate expectations and maintain levels. The chart has 5 levels (from "silent" to "outside voice") and are related to the super hero theme.
Here we have a card which is perfect to end up a lesson. With this card we are asking the student what they learned and what they need to improve. They can also rate the lesson of that day. This way we can know if what we teach is being suitable for the students or not.