Outlaw "I'm Done!" I LOVE this post from Kady at The Teacher Trap. She makes some really good points and includes suggestions for helping kids change their mindsets about rushing through their assignments.
20 Brain Break Clips: Fight the Fidgeting! by Bevin Reinen - Videos sure to get your students (and maybe even you) moving and grooving! (Links to 40 more Brain Breaks clips to use in class as well as holiday clips.