>>22
Nice to see a fellow EE, but on that subject how do you view USB mittens as being practical? I just don't see it. What do you plug it into? A laptop perhaps, mine goes to sleep and shuts off power to the USB ports when closed, plus it would never fit into the carrying bag with cables sticking out of the sides, so that's not very good for going outside where mittens are needed most. Though the biggest downfall I see is cables coming out of your mittens, which might be acceptable if they served a dual role as a lanyard, but USB cables are easily detachable! Alas, with shortcomings such as these I will have to pass on your otherwise kind and generous offer unless you can convince me that such a thing has merits surpassing the simplicity and longevity of a chemical reaction between common lighter fluid and a platinum catalyst.