This Tuesday, Writer's Weekly will be holding their annual short story contest which takes place over 24 hours. After you enter, you're emailed information about the subject matter and word count the day of the contest.
They have a reasonable entrance fee of $5.00 and the prizes are worthy of your attention.
Why not stretch your writing chops and enter. I'm entering for the fun of it just to see what happens. I haven't written in narrative form in quite some time.http://writersweekly.com/misc/contest.php