Slashdot linked up this Popular Science article detailing a simple concept that turned out to be damned difficult to execute: colored bubbles. Better still, the solution could end up revolutionizing whole industries that revolve around paint, dye, or color in general.
Now all he needs is a factory that can crank out a couple million of these within six weeks, and won't sell details of the process to his competitors. Good luck to him... if I see "Zubbles" on the store shelves by Christmas, I might even buy a bottle or two, just to help him out.