Picture this...a birdcage with three levels inside. Bottom level holds the psu and hdd. Center holds the mb and graphics card. Top level contains a Boreas TEC cooler. A cord sticking out the bottom and a handle on top...doesnt get more portable than that. You could even get one of those birdcage covers for when you transport it.
http://www.birdcages.com/bird-cages/...cagemedium.cfm Or maybe just two levels with the mb on top and the rest on the bottom.
Perhaps a Cape Cod is more to your liking...
http://www.birdcages.com/bird-cages/...odbirdcage.cfm
Oooo...bird proof lock on this one.
http://www.birdexpressions.com/poqui...avel-cage.html
Oh - I almost forgot the cover.
http://www.birdexpressions.com/bird-cage-covers.html (Yes, I have too much time on my hands.)