So, this might sound stupid but just imagine...Are you imagining yet? (If so, good) (if not... IDC)
I was thinking that we should all have book shelves that can turn in from the wall by remote control. So if you don't have enough furniture space for all your books you have a normal looking room most of the time but then you press a button and all the furniture is swivelled round into the walls whilst they are replaced by lots and lots of book shelves all around you with lights at the top of each one...
A bit random but that would be so frickin' awesome!!!!!!!