Because I felt this was something that might be helpful and I know people have asked for it in the past, here is...
( The 15_minute_fic Community Word ListCollapse )
We'll do our best to keep this list up-to-date, so if you don't want to be spoiled for the word-of-the-week, don't look at the list until after you've written your ficlet. In the meantime, feel free to browse the old prompts and write to your heart's content. If you choose an old word to write for, by all means leave a comment on its post with a link to your ficlet (I've included a few dates as guidelines for where you might find some of these words), and you may also post a link to it on this post if you fear it will get lost in the shuffle the other way.
Happy ficcing! ^_^