I have some ideas but so far no luck getting traction, but that might be because my ideas are not the easiest to join in terms of other characters. What are popular rp things?
Hmm, I've seen a lot of Fantasy and Romance-centric roleplay prompts being put up by folks, at least , as of lately!
You could look through stuff others have posted and see if any of it strikes your fancy. And if not, it should at least give you some more ideas of what sorts of things others are looking for, and how you might be able to adjust that to something you're interested in.