Whew! It took me a long time to do the board layout, but here it is! The board is about 4 x 1.75 inches, or roughly the size of an elongated credit card. The resistors, LEDs, and odd-sized capacitors are all labeled, so any other small rectangular surface-mount parts you see are 0.1 uF decoupling capacitors.

Anyone see any problems or have any suggestions for improvements, before I send this off to be manufactured?