Instant shelter: just add water
The Concrete Canvas is a cool idea. The "building in a bag" is basically a tent impregnated with cement. Add water, inflate and you have an instant building:
A single person can set up the building in 40 minutes which is ready ready for use in 12 hours.
It is almost as easy to transport as a tent and as durable and secure as a portable building. At a quarter of the cost it's coolissimo!