Re: Forcefield to full power save the floor!
Depending on your hookah, i have seen designs for simple "clamping stands" one can put thier hookah on. basically, if yous hookah has a wider stance it wont tip over. A piece of wood with a way to clamp onto the base of you pipe could give you enough stabillity. A sheet of wood that would be hidden under a couch if thats an option would work. As for people who bump it REALLY hard, assuming that the hookah does not tip over, a rug would probally catch it, seeing as it would just fall. if your really worried about that scenario, someway to extend your tray would catch the coal.
Or you use antigravity, still working out the kinks though.
Give a man a match, he will be warm for an hour. Set that man on fire he will be warm the rest of his life.