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What is better, heating a room or heating yourself? When you are thinking on the last option, I have a very simple method. You can use a 12 Volt electric blanket. The only thing you need to do is to make a slit in the center of the blanket, to put your head through. And sewing a collar around the hole with a strip contrasting cloth. To close both sides, use Velcro. With a 12 Volt lead(gel) battery of 12AH you can be warm for some time.
http://www.safarana.com

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Bio: Tinkerer from childhood on. After my retirement, together with my wife, fully committed to creative production. I prefer simple solutions for non-existing problems.
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