Cosmic has a great idea, but I'm afraid I would burn the house down if I got my hands on an electrical wire and started fiddling with it near an outlet or some such.
It does get cold in In East Tennessee. One winter, years ago, the temp dropped to -20F. We thought a new ice age had descended upon us.
I just suit up, put on hat, scarf, sweater, a couple of long sleeve shirts, heavy mittens that fold back so I can use my fingers, boots, thick socks, space heater, blanket or two, and sit out on the deck.
Hey, it beats not smoking my pipe, which my wife hates.