Three years ago I made this design to accommodate a Raspberry Pi B computer.
The case and hold everything together. No hardware required!
I'm particularly taken with how the wood is cut to use the natural elasticity of the wood to allow the top and bottom sections to strech just wide enough to snap into place leaving vents on the top and bottom and not requiring any adhesive or screws.
I used plywood birch 3mm thick.
Grab one Ponoko site here: http://goo.gl/VX4WAL
Full assembly instructions See the video
Design by G. Perez