Table Rituals?
I run games for lots of different people and I noticed that some of them bring their own rituals from other tables. The one that stands out is to hold a hand to their head when talking out of character. I've never said anyone needs to do this, and have never done it myself. I guess it's just habit with them. To be clear, I have no problem with it and actually find it kind of endearing.
What are things your table does, or other players do, that are unique?