I recently picked up a small 1/2 rack for organizing my two systems and various network stuff. I had originally made the design complete with the roof and light on top for when I cut it to put on a laptop. I just cleaned it up a little bit and scaled it up to fit. In the end the design was 20.25" x 37.75" and is the largest single vinyl cut I've done so far.

Image of part of the process:
http://www.furaffinity.net/view/4974789/