Take Up Less Space With A Vertical Bed
image from Office for the Development of Substitute Materials
TreeHugger always promotes ideas that let you live in less space, as well as transformer furniture that goes away when you don't need it. Jamie O'Shea of the Office for the Development of Substitute Materials has developed a vertical bed that lets you sleep almost anywhere in a lot less space.
It attaches to subway grates, which perhaps limits its utility a bit, but has noise cancelling headphones, opaque sunglasses and an umbrella.
When your nap is over, you can fold it up and put it in a suitcase. Talk about living with less!