How clever – and yet how simple – is this?  Japanese design studio Yoy have come up with a wood, aluminium and elastic canvas chair which can be stowed neatly on the wall as a work or art and then sat on comfortably when taken down and leant against a solid structure. It comes in two chair styles and a sofa. The young designers behind the concept, spatial designer Naoki Ono and product designer Yuki Yamamoto, have some other great ideas too which you can check out here.