This has information and ideas about reusable housing and buildings, like the bus stop shown in the image.

This has information and ideas about reusable housing and buildings, like the bus stop shown in the image. Living in ex-container boxes might not be so bad, if the alternative is a shanty that might fall down.  It also mentions Nissen/Quonset Huts, of course.
http://affordablehousinginstitute.org/blogs/us/2009/06/little-boxes-little-boxes.html