I came across this today at the blog Tokyo Mango: a "USB-powered lunchbox warmer from Thanko [that] will keep your meal at a constant 60 degrees Celsius until you're ready to eat it."
Once again, I am delighted and awed by Japan's bento brilliance. No need to use a microwave or even get out of your chair. Just plug your lunch in to your computer when you get to work, and it's there, hot-n-ready, at lunchtime!
How cool is that? And, more importantly, when is it coming to America? Here's the Thanko product page, all in Japanese, unfortunately.