Nicked straight from FFN.
1. Pick a character, pairing, fandom you like.
2. Turn on your music player and put it on random/shuffle.
3. Write a drabble related to each song that plays. You only have the timeframe of the song to finish the drabble; you start when the song starts, and stop when it's over.
4. Do ten of these and then post them.
No sign ups required, just post it straight in New Fiction with the title and character/pairing/fandom in the title. (And rating, as usual.)