Remixes. Where you re-write someone else's fic (with permission!) without changing the plot.
You can change POV character, focus on small details or B-plots, reverse the timeline, use a different writing style or format (poetry! Limericks!) etc etc
The possibilities are endless.
Remixes were totally a thing about a decade ago, but I haven't seen them lately. And I've certainly not seen any remix challenges. The important thing would be to have a word limit for the original story submitted, maybe 5k.
You can change POV character, focus on small details or B-plots, reverse the timeline, use a different writing style or format (poetry! Limericks!) etc etc
The possibilities are endless.
Remixes were totally a thing about a decade ago, but I haven't seen them lately. And I've certainly not seen any remix challenges. The important thing would be to have a word limit for the original story submitted, maybe 5k.