Originally uploaded by Flexiblelove.
This was one of the things that impressed us at Furnitex. Made of cardboard in a honeycomb weave, it has 2 wooden ends and can be flexed into many shapes. It neatly squashes up to be about 22cm (8.5") wide for easy storage.
Naturally you wouldn't want to leave it outside in the rain, unless you want papier mache, and we noticed that the cardboard collapses a little on the top from where people have sat on it. We did try it out and was surprised at how supportive it is.
Mind you, I'm not prepared to cough up $699 (Australian) for it!