Check out ToorCamp, it's a lot newer and smaller than Burning Man which are huge pluses in my mind. The last couple times it's been held in a beautiful part of Washington with perfect weather. The atmosphere and people that attend are what make it great--it's folks who actually want to make things and share experiences together, not people looking to buy status/culture. Next one is in 2016: http://toorcamp.toorcon.net/