This might seem elementary.but I love the quiet spray idea! Very cool teacher ideas on this site. Quiet spray has nothing in the bottle but air. This may be the smartest classroom management tool I have ever seen.
Everyone gets a square with a quarter circle, this is the end result- could be a good ice breaker beginning of year activity. Each student decorates the square and includes their name. Nice way to decorate the bulletin boards in the beginning of the year!