I'm envious of both of you. I have only one idea, Buffy and Spike meeting years later . . . and I keep wanting to write that over and over. I wish I had an actual imagination.
That's basically what I did for years after the two TV series ended. I always thought of it as my variation of what Spike told Buffy after she came back in Season 6. It was my "Every Night, I Reunite Them" series.