The heat is in the tools!
I don’t have a garage that’s useable yet. But it will probably have a propane heater and something else, maybe electric, maybe a wood stove, we’ll see when I get to that point what makes the most sense. Working on stuff outside, mostly I just deal with it, but I have used a kerosene wick type heater for something to warm my hands by or sometimes built a tent and used a torpedo heater. My buddy uses natural gas heater, but you can’t fit anything in his garage (good place to hang out though and sometimes we build a tent off the garage door and work there) but natural gas isn’t an option here