I'm kinda surprised that in three pages of threads - no one has mentioned any sort of cooking gadget. :)
I like perusing through the travel store at T/A truck stop on the Interstate near me. They cater to truck drivers and I think they have every cooking appliance known-to-man that plugs into a cigarette lighter! I think they even have a microwave that works in a truck, too! :)
Not that I would buy any, I just don't need them. But I am amazed at how much of a range they offer.
I knew of a couple that brought a full sized Mr. Coffee with them, in their suitcase, wherever they traveled. I guess it was a priority for them.
So - are any of us secret-travel-chefs? Or just heat up water for coffee or ramen? Anything that you would recommend to try, or not-try?