I couldn't live without this in my classroom! My students absolutely love it as well.
-Simple to implement, but with big results
-Includes choices of mystery walker, worker, listener, or participant. Use one or more.
-Name tag items are editable or write on.
-Includes numbers for those who prefer it.
All you need is an empty container or space to post the small sign and names to pull.
Observe your students secretly for the expectations you set forth and reward them when they do a great job!