Challenge to myself: Build an ornament for the Christmas tree in the few hours before Christmas Eve dinner.
I grabbed an Arduino the size of a coin I've been playing with called a "TinyDuino," from Tiny-Circuits, along with a little stash of LEDs I got from from Evil Mad Scientist.
Using the TinyDuino's prototyping board, I decided to solder the positive (long) ends of six LED's into the board so they radiated around it like this:
