I think it would be cool if a mechanical engineer were to invent some sort of furnature that could be easily bent around into many different shapes. It would be a sofa, or a bed, or an end table, or an ottoman, or a TV stand, all at the click of a button. There's sofa-beds already, of a sofa whose interior can be unfolded to provide a bed, but I'm thinking of an even more flexible version that can become anything in the house that doesn't have water or electricity flowing through it. It would really help perpetually indecisive decorators.
Probably more trouble than it's worth.