Can't stop folding and tearing paper.
For some reason, it feels really, really good to fold a piece of paper in half repeatedly until it's barely staying in one piece. Then, tear it in half.
Then, do the same thing to those two pieces. Fold repeatedly, and tear.
I stack the small pieces I make in a pile. Sometimes it's squares, sometimes it's triangles...
But the thing is, it feels so good on my fingers, and it helps me relax...