Rocking. Either in a rocking chair, or "swaying" back and forth while standing, or rocking in small motions while laying down.
Folding my ear over so that the cold side touches the warm side.
Chewing.
OH and I make clicking noises, like some people make at horses.
There's others I do if I'm in public and I'm really not sure how people are going to respond, like cleaning under my nails, pulling on my hair under the guise of "arranging" it, squeezing my arms together really tightly when I fold them.
If I'm absolutely sure I shouldn't at all, I've mastered flexing all my muscles rigidly without it being visibly obvious. If I can't "flex it out" then I'll rock my foot back and forth in my boot.
_________________
"So much of what she'd thought was truth before was merely tricks. No more than clever ways of speaking to the world. They were a bargaining. A plea. A call. A cry."
I am a Bookwyrm.