The banlab research centre in conjunction with the Keio University has used cardboard tubes to build temporary school buildings. The article discusses the importance and role of architecture after disasters.
As a material paper is cheap, and more importantly, it uses materials that are available anywhere in the world. It is also structurally sound, so you do not have to worry about safety issues. Shigeru Ban has already used paper tubing for rebuilding after earthquakes in: India, Turkey and Kobe.
This excerpt particularly inspired me on this particular Monday:
People tend to think that architecture is only about building skyscrapers and homes. And sometimes, architects let that kind of attitude go to their heads. Architects have to think about what they can do for society. The answer to that is doing something for people who need help. That’s an obligation.