Thinking of the craziest yet useful gadget wouldn’t normally involve a couch. But the minds behind the USB Sofa are some special breed of human. I mean, couches do nothing but sit, stationary, never moving unless one of us humans move them. Why not make all of that wasted space go to good use by cramming in some digital storage? Everything else is becoming a USB drive, why not a couch? The only difference is that the USB Couch is actually useful and clever. You...