Q&A; Remote Portable Power

A fellow treehugger needs our help and we figure that our community of readers will come up with a better answer than us writers alone. Here's what he writes: "Dear Treehugger, I am an anthropologist preparing for a fieldtrip of several months in eastern Nicaragua. I hope to be able to take an Apple i-Mac or G4, an i-Pod or X-Clef (for recording interviews, etc.) and a digital camera. There is no electricity (or at least no reliable supply) and I am looking for something portable which would be able to recharge the batteries of all the above. A friend gave me your website address and suggested that you might have something like a wind-up battery recharger. Do you have anything like that? Or any advice? Yours sincerely. Mark J." Please leave any useful advice in the comments section.