car battery, sin wave inverter and any 240v flash will do
I think AliB shoots with an R3 she picked up at Focus earler this year. I can't find the original thread with the details in though.
IIRC, they're about £180.
A friend of mine bought some Kino Diva lights. He is a videographer right enough but he's able to create a lot in video that he hopes to be able to replicate in photography.
http://www.kinoflo.com/Lighting Fixtures/Diva-Lite/Diva-Lite.htm