Some contest details from the Crankahead web site:
Build your own vending machine, donation box, mechanical picture or automaton. Here we call it automaton and mean an object with moving components. Build it within a limited time period and send us a video, some pictures and a description. That's all!
The automaton you make was never published in the internet before the competition start date: October 12th, 2010 (no images or videos on Youtube, Facebook, Twitter, …).
After this date you are free to reveal details of your automaton in work in the internet.
There are no restrictions: you are free to choose materials and mechanisms and there is no specific subject to follow. There are also no limits with the size (except due to the size of your home) because in the end you only need to make available the documentation material (video, pictures, description).
The contest period will end on January 30th, 2011.
For all the details visit the Crankahead Automata Contest web site.