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Maybe you would like to check out a sand battery.

They’re being used now to heat entire towns for months in the winter, it can be scaled back for home use.

A little ingenuity and the possibilities are endless.

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Sleeping on an electric heating blanket is also a great source of emergency heat.

It’s cheap to use as well.

What I used to do was lay the heating blanket on the bed, a sleeping bag over that, and a few blankets to cover the whole thing.

I’d crawl inside the sleeping bag, and the heating blanket would warm the whole setup.

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