This is pretty student-centered and I think it is a good idea to take the student's thoughts into consideration when there are issues, like Caleb from Tough Young Teachers. Self-evaluation worksheet to help monitor and have classroom management.
I loved doing this in art class. Art With Mr. E: Line Design w/Shading - Grade Very cool, fun art shading project from Art With Mr. E. he's an elementary art specialist. Try this with your kids (but I think grown ups would enjoy this too).