Winter Camping Set Up

Insulation - wool blankets on floor & ceiling, window covers and curtains, blanket or curtain over rear hatch - helps keep the ambient temp up in the van. I've only camped down to about -12°C so far, but I've kept the interior up to at least 4°C overnight, and reasonably comfortable through the day.

Window covers - mine are foamboard, but you can use reflectix, cardboard, etc. Lots of how to videos on youtube.

Curtains over the rear hatch, side doors and rear windows. Divider curtain between front seats and cargo area.

Emergency blankets/reflectix - pinned to ceiling and/or curtains to reflect heat back to you.

Cover over lower trunk in both rear and middle of van.

Lined floor with wool blankets. Wool blanket glued to ceiling. Wool blanket under mattress.

Park facing where the sun will rise in the morning - letting the sun/window/greenhouse effect warm the cab.

Modified "pop can solar heater" in front window.
https://www.youtube.com/watch?v=XemVuvaOgqg
I actually just used dryer vent hose, running it from the floor in the cargo area to the dashboard, across the dash and back to the top of the cargo area.

I sometimes start the van and blast the heat for about 15 minutes before bed, and sometimes if I wake up to pee through the night, and again in the morning.

Candles - Sometimes I light a candle before I get out of bed just to take the chill off. Sometimes I keep a candle burning throughout the day.

I boil water with my butane stove in the morning for tea or coffee, which spreads the warmth.

Rechargeable Hand Warmers - used in bottom of sleeping bags to warm feet, inside a thin mitten so I don't burn my toes. Used on sides of cages to warm birds.
https://www.amazon.ca/dp/B0CGKY9PLV?ref=ppx_yo2…

USB Heated Blankets - only 10 Watts, take the chill off on cold nights
https://www.amazon.ca/Heated-Blanket-Operated-P…

Electric Heater Pads - meant to sew into clothing, but I just tuck them under the sleeping bags.
https://www.amazon.ca/dp/B08JH3Y8V6?ref=ppx_yo2…

USB Seat Heater - 10 Watts - I move it to wherever I want to sit throughout the day.
https://www.amazon.ca/Automobile-Universal-Brea…

Electric Foot Warmer -
https://www.amazon.ca/Electric-Heated-Foot-Warm…

Window Defroster/Heater - 150W - ok for small spaces, but it does drain the battery faster than anything else I use.
https://www.amazon.ca/Portable-Defroster-Defogg…

Night Light - 4W incandescent bulb -keeps the ambient temp up, as well as for light.
I'm also considering this 7W night light;
https://www.amazon.ca/The-Porcelain-Garden-Rota…

Camping Wood Stove - I use it as a candle holder inside the van,
https://www.amazon.ca/dp/B0BPXRC45W?ref=ppx_yo2…
also added a sand/copper heater (tongue scraper).
https://www.youtube.com/watch?v=xp66vawuYQcRead more