me?
i typically rest on the pickup for the E and A strings, and the E string for the D and G strings.
Occasionally I might rest on the A string if I'm playing a string of notes on the D and G.
If I'm playing something that's chugging heavy, chunky E string notes (songs like say, Enter Sandman) I sometimes rest my thumb/hand at the top of the body (yeah... I have big hands) because it lets me really thud the notes out. This is even rarer though.