There's an interesting piece over at CDM on the portable set-up I used for 'no MIDI no keyboards' (below) - and other works in that series... well if you could call it a series, or a work.
http://createdigitalmusic.com/2010/06/22/batteries-and-suitcase-music-chris-carters-no-midi-no-keyboard-musical-rig/#more-11657