A friend of mine from work had to empty his small (1500sf) house in order to have the wood floors completely redone after they buckled badly from moisture damage. As he puts things back (some went into the garage, the big stuff was packed and taken by movers to storage) he is choosing to put back just enough in each room, and the rest will be tossed or given away. He'll end up with a house that looks larger because it isn't so cluttered (he's an artist, and has an eye for interesting objects, so there will be some good stuff going out to the curb).

I suppose one way to emulate that kind of transformation would be to empty everything out of a given room and then put back just what fits. Charmion has been doing a version herself. Perhaps a good project over the long holiday break.