So, as some of y'all may know, I'm tendinitis'd up. In the winter months, it's especially bad.. I can't deal with the cold. SO, I want to make a pair of wrist warmers... but not normal ones... I want them to be battery-powered, so I can be super-warm. I've googled it, and I can't find ANYTHING relating to it. I know it's been done to a jacket before! I would use my heating pad, but I don't always have access to an outlet. Any of you electronics gurus know how to jimmy up a pair of these? I can follow instructions, so if anyone can come up with some simple ones, I could follow it. (and if I can't, I'll bug my dad. ) I'd be much obliged.