I don't think it was designed with this in mind, but a Dutch architecture company called Heijmans have developed temporary accommodation that they initially hoped would provide housing in derelict urban sites.
The structures are two stories high and are equipped with kitchen, bathroom, bedroom, living room and a small outdoor space. The skeleton of each construction is made from wood, and the structures produce energy themselves, so the hope is that energy costs will be marginal, although it isn’t clear just how they will tap into the utility network of the city.
Each home is made off-site in the Dutch town of Tilburg and Heijmans claim they can be installed in less than a day. Dare say something like that would be ideal for situations such as this.
http://heijmans.nl/en/heijmans-one/