I am really fascinated with small useable spaces. For the last couple of years I have been following people using old shipping containers as living or office spaces. I saw this video tweeted from Dwell Magazine. There are some pretty cool elements shown here. This couple took it to a much higher level of use actually stacking the containers in the house to create smaller intimate spaces.
Check it out to see what you can do with these used boxes. http://www.dwell.com/videos/Contained.html