Ooooh, there are so many little things!

I often tap on the table when I'm bored, or find a small fragment of rubber or paper and play football with my fingers
I bite the knuckles on my thumbs when I'm thinking
I can make the veins in my feet bulge!(I have bony feet)
I sometimes make clicking sounds of a horse galloping when I'm waiting to do something, although I don't do it a lot
When I'm really bored I make faces in the mirror