Would anybody be interested in a writing challenge? I've seen this in other fandoms. The Mod could pick a prompt or idea and post it, and anybody who is interested would have, say, three weeks to write a 1500-word story based on the prompt? Then they post the stories, or send them to the mod for posting (if that works) and everybody can read. Voting for favourites would be optional, if desired.
Writing challenge?
What does everybody think?