In the spirit of being Nina's crowned geek of GFY, this
is an ST-251, encircled with 8x256kb ram chips as a base. The tree itself is 2 286 motherboards. The lights WORK and are 15 red flashing LEDs and 1 always on white LED for the star.
It took 2 hours to build and unfortunately is not the first time I've done something like this for Christmas... There is also a chaser LED forsty the snow man and a life sized circuit board reindeer. ... I'm lame!