I do the thing where I will stare at people, houses, nature etc and catch myself. It gets especially awkward if i am in a phase where I am obsessed with improving my anatomy on a particular bodypart lol like for example sometimes I will stare intently at how people's hands move. When that bodypart is something more private (like the chest area) I have to be actively aware to not study people I meet because I don't want them to feel disrespected.
Another artist/writer thing I do is like when I am on vacation or at a party, the writer in me is constantly occupied noting actions or locations I can put my characters in.
While working on my art i am probably one of the most jumpy/scatterbrained artists around. I will like draw a little, then run off to vaccuum the floor. Then halfway through vaccuuming i will get bored and draw again. Etc.