There’s a great competition at DBA Lehane’s site;
The challenge is to write a complete short story in just 6 words. As someone who has been struggling to flesh out my stories it is really good fun to try and pare it down this much. It is inspired by Ernest Hemingway’s story “For sale. Baby shoes. Never worn.” which succeeds astonishingly well.
Only one entry per person allowed, I have emailed mine which is a very obvious one, but once it popped into my head I could think of no better.