o/~ Tiny circuits / on my fingers / make me blinky / tiny circuits o/~

I just heard back from the vendor I met recently who sells glove-mounted fingertip blinky lights and other neat rave toys -- the electronics in the fingertip lights are mounted on a circuit board 14mm in diameter, which just coincidentally happens to be the size I managed to get a draft of an acceleration-sensitive 4-LED board down to (when I was trying to figure out just how small I could make this circuit). w00t!

Now to figure out where I can get a few of these prototyped on the cheap, since I am pretty sure that it isn't possible to prototype a board with 8-mil traces using the iron-on method. (I would, however, be delighted to be disabused of this notion.) Any clever ideas, readers?