Today's fan takes the same space when it is on and off. After turning the fan on the maximum - a cage covering a propeller is what we see.Its form looks way too technical and not friendly to our home place.
Vertebrae Staircase by Andrew McConnell (Canadian architect). Concept is based on a whale's backbone. "Each piece would incorporate one step, one banister and part of the hand rail, interlocking to create a rigid, self-supporting structure