The winners of StarshipModeler.com's "Wrecks" challenge are a mixed bag, with some absolutely incredible destroyed sci-fi models, both kit-built & free modeled, and dioramas. And then others that are less impressive.
With a grand prize of $50,000, the Build a Better Burger Contest is the biggest hamburger recipe contest in the world; with the upcoming contest being judged on Sept 29th, you can take a moment to stroll through hamburger history, with recipes for all 17 years worth of prizewinners. Not enough burger for you? Then try making any of the 10 runner ups from 2005 & 2006. Still more, you demand? Peruse the database of over 5,000 contest entries broken out by category, even the most jaded burgermeister is sure to find something original & delicious to try.
If you're the type who gets creative when you drink a lot, the folks at Canstruction have a few ideas about what you can do with the discarded empties. Here's a slide show of some good examples, and here are the winners of their contests in 2002 & 2003 respectively.
Dangerous Road Signs. Okay, so, I'm posting a link to a photoshop contest: I'm lame, that's a long established fact. That said, some of these really did amuse me - take a gander if you're up for a laugh.