Claiming MunLtStmper for Zentangles! I kind of have a way to do something experimental (for me, anyway) with that as well!
I live in Michigan! I don't really have any strict preferences in terms of what I do or don't want to receive. I trust just about everyone on Craftster to have a pretty good idea of whether something is appropriate to send someone. Blood, gore, and nudity don't bother me at all, unless they're all combined into one card: not into the implications of a gory nudity card. The only thing I wouldn't really appreciate would be, like, a Bible verse scrawled in Sharpie on a blank white card or something: if you've put any effort at all into the card, I know I'm going to love it.
Superheroes (especially Hawkeye [Barton or Bishop or both!], Supergirl, Deadpool [does he count as a hero??], Ms. Marvel)
Loki (the Marvel villain or the Norse god)
Moveable/Foldable/3D in some way (even if that means a piece of origami glued to the card)
Illustrate your favorite fairy tale
Untranslatable words (illustrate one or just write up the definition all fancy-like)
Magic (your interpretation is more than welcome!)
Powerful Women (I think I'd like to eventually display them all in some kind of art piece in my classroom)
Pagan Wheel of the Year
An ATC that illustrates/shows/describes your day
A theme from your list
Artist's Choice! I'm really not picky and just love finding beautiful little pieces of art in my mailbox