A couple of years ago I challenged myself to write 20 different femslash pairings. Ok, most of them were rather "romantic/ambiguous friendship" than "full blown pairing" but I'm told people often dislike seeing slash in their childhood fandoms and don't care for femslash. I've been asked for Vic/Pol fic and sort-of complied even though I don't ship it myself. Same thing for Yoko/an obscure male Vinean character.
At times I geek over Vinea's ecosystem and Vinean biology, how things can and cannot work. I wonder what could ever go wrong with Monya's time travels.
And I scared a fandom friend away when I discovered Rule-34 existed for Yoko and told them so.