Hmm!
favorite: clouds! it's always soothing. after that, I'd say I really like dragons, and strong emotions on people. I feel the last one is what motivates me the most whenever I don't have anything specific in mind.
oh, also, hands used to be my least favorite, but now they're up there close to the top. They have personality. I only really figured that out last year.
least favorite: like...furniture. You may notice my works don't generally include furniture. Like with most things I don't enjoy drawing, I just don't have a lot of experience with it, and kinda don't know how to think about it. If I'm going to draw a chair, I get impatient thinking about the geometry of the legs, the seat, etc. to just get it out of the way, instead of like, how it could be visually impactful or stylistic.
Architecture also pisses me off. I'm really impatient, and neat orderly geometric lines are the opposite of what I'm good at, and it kind of tricks me into wanting to do it manually but PERFECTLY all the time. I think I'll just try to learn to deal with wobblier looking buildings. It's not that I think it looks bad, it's just brain cobwebs...
Thanks for the ask! :3