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Yes, in Japan, you can plug in this special USB lunchbox (or more appropriately, lunchbag) and you get to heat your food for lunch (although it's hard to imagine how USB can do that). It's compact, durable, and is prefect for yoru office desk. One drawback though is that lunchboxes and desktop computers do not mix. But as most employees are hard-headed and usually break rules, you have to make sure you don't spill anything on your keyboard or your boss might opt to ban the device for good no matter how useful it is.
Save gas! Turn your car into a water hybrid.