proof-of-concept, and now the folks at Uncommon Projects are ready to unleash their televised-widgets-in-an-Altoids-tin wonder on the world -- for free. There's a catch, though: you have to show up at the upcoming Maker Faire in San Mateo, California, and build it yourself. Yahoo is sponsoring free workshops with parts for all, and all the skills you need to get one together will be taught at the 'shops. No worries if you can't make it out to San Mateo, however, as you can still get the schematics and parts list from the YBox website and build one at home, but you'll be doing a little more work -- Uncommon Project's Kent Brewster has already milled 80 Altoids tins for Maker Faire participants. Peep a vid of YBox assembly after the jump.