Huff, puff, trying to get back into theorizin' shape.
This here's an essay on Science Fiction. More specifically, all the fun and wacky variants! It's a list of all the facets I could think of. See if you see anything you like.
I suggest not trying to read it through. It's a bit repetitive. Instead, skip anything that bores you. I, uh, should warn you. It's pretty detailed, and definitely only a first draft.
Science Fiction facets