Nat @ CRAFT writes:
Ponoko has a new 10 Day Design Challenge — this time on Puzzles! Create an intriguing and entertaining puzzle on a laser cutter within the next 10 days. Up to $5,000 in prizes are up for grabs! Photo above is by jared who created an edition of 100 puzzle kits. Find out more on the rules and how to enter at the Ponoko Blog.