When I started prepping my van for winter, I didn’t think a 12V electric blanket would make much difference. After one freezing night I changed my mind — it kicked in quickly and held steady warmth without me having to run the engine. I leave it connected to an insulated battery bank and pre-heat the bed 10–15 minutes before crawling in. It’s not luxury, it’s smart gear. Now I roll up the blanket and tuck it away right after use so the wiring doesn’t get bent, which keeps it performing season after season.