This full clear acrylic enclosure for the BeagleBoard-xM will transform your development board into a full PC. It's easy to throw together with its clip together design and gives you access to the reset and user buttons when assembled and access to the bottom expansion headers.

Assembly instructions can be found here:
http://www.built-to-spec.com/blog/kit-instructions/beagleboard-xm

And you can grab the design files here:
http://www.thingiverse.com/thing:37293