too many ideas, so few ships

Sometimes I get hit with an idea for a fic and it's really good but then I start thinking about other possibilities for it and I end up in a landslide, ending up with like seven different ideas that are all just similar enough that writing and posting all of them would be repetitive. There must be a way to be able to combine them all back into one? The wonders of oneshots, I suppose. Just write 'em all out separately and keep them for yourself haha.