Check out this cool mod, the Pong Clock.

It was made by Flickr user funnypolynomial from an old Thinkpad laptop and a photo frame.

I rescued an old Thinkpad ages ago and began a project to install it in a picture frame.
The original idea was to have it running things like Conway’s Life and the Mandelbrot set. But then I saw the Pong Clock on a blog and decided to just do that instead.

Flickr via Make