I brought out out the electric blanket, heavy sheets, and supplementary propane heater. A nice thing about DC 12v blankets is you can leave them plugged relatively safely in and they dont shut off after 8 hours.

I try to keep the propane usage down so as it gets colder I adapt by layering up with thermies, gloves, heavy jackets as it gets colder in the night. When in winter mode I can comfortably lounge in about 55f. If it gets lower than 55f I turn on the propane heat. However coming out of summer I can't even endure 60f without feeling cold it takes time to adapt.

I recently heard about hot tables essentially draping table with heavy blankets and having a heat source underneath so the hot air gets trapped and you put your legs/body underneath, sounds like a good project for winterizing my table. My other DC electric blanket has a broken outlet I may repair it so my chair is heated.