In your wanderings on the Internet you’ve probably stumbled across the Hexayurt. It’s an emergency shelter designed by Vinay Gupta that can be built for about $200. Vinay has also been contributing to building a wealth of information on sustainable living at Appropedia.org.
I’ve just started skimming the surface of this incredible resource but thought I’d make a quick recommendation to my readers to check it out. Much of the information gathered there pertains to simple small housing solutions and sustainable living.
Vinay has a related project dedicated to a mass-evacuation plan and disaster survival at disastr.org. This is a little off-topic for Tiny House Design but I thought I’d mention it since I know many of my readers are also interested in disaster preparedness.