Based on the laser cut Bus Pirate case. Seeing as I didn't have a laser cutter but did have a Makerbot I decided to print one instead.
If you are printing this from anything other than PLA or natural ABS you will want to consider how you will be able to see the status LEDs. The red LEDs can be seen easily through ABS, the greens can be seen but are quite dim.
Also the inside of the case is a snug fit. Depending on the tolerance of your machine and how well the board was cut you may want to either edit the blender file or simply scrape away a little from the inside of the case. For me I had to scrape away just a fraction of a millimeter.