george wins thread
Padded test meter case. Also use an old camera case from an Olympus C400 (http://old-digitalcameras.com/MorePicts/MP51.htm) Back when small digital cameras were the same size as gameboys!!
I was just thinking earlier that there must be an easy solution along these lines (cases for various bits of tech), and came to the conclusion that cases for hard drives are perfect 2.5" for CGBs/MGBs and (some, I assume) 3.5" ones for DMGs.
Currently keeping my Colours in some 2.5" hard drive foam slipcases and throwing them in whichever bag I'm taking with me. It's certainly a step up from old socks anyhow.