Urban Re:Vision hosted a contest to answer this need; one particularly cool submission for which was designed by Ming Tang, whose central feature was to develop a temporary shelter for homeless people that exhibits characteristics of umbrellas and folded fans. The structures can be arranged into various contexts and dwelling requirements. The self-reconstructive "origami" structures can produce potentially infinite scenarios. Composed of paper fibers, water, and cement, the buildings can be used for a variety of construction applications. The lightweight paper house can be pre-assembled in the factory, folded into a small package, and loaded into a truck for transportation. Awesome, awesome, awesome.
See the full submission here.