The Unfolding Apartment:
Eric Scneider's amazing space saving unfolding apartment fits neatly into one wall - a wall that interior designer Michael Che was able to fit a kitchen, closet, bed, bathroom and office into.
How about some unfolding furniture? Or Japanese puzzle furniture?
Stop Playing with Yourself:
Tangram Origami (How about a Parajita?):
More designs and concepts here.
They call this "Origami Furniture", but not sure where the relationship lies.
Flip Panel Door