It's easiest with the kids I think, hehe

*L (10 years old) strokes her index finger back and forth over her cheeks when she's shy.
*Aurora (2 years old) never sucks her thumb but will almost always suck the top of her hand.
* Islalin doesn't use "me", "my" or anything like that and will usually use "Isalin is.." or "Isalin does.." and occasionally (more written than in person) will use "she" in the middle of a sentence
* Anastasia's favourite places to sleep are under a Christmas tree if it has bells on it or inside cupboards.
* I stroke my index finger up and down the ridge of my nose anytime I'm stressed or feel (uncomfortably) switchy.
There's probably lots more but those are off the top of my head