Theme Ideas ? (Patreon)

Next month for the patreon I wanted to have a theme a bit like mermay but one that we chose ourselves. It wouldn’t affect the weekly requests themselves (or it could if you guys want it) but I would draw themed things on the side.
Soooooooooo what could be the possible themes ? By theme I mean stuff like “pirate” “medieval “

In the comment section give me some of your ideas and then I’ll do a poll to choose the final boss!