“for an insulating base. . . .Find a cardboard box”
Better yet, dumpster-dive behind the green grocer and score some waxed cardboard. Waterproof and stiffer than a lot of other cardboard a 5″ x 5″ square makes a fine stove base and doubles as a cutting board and an excellent emergency fire starter. When it gets too funky from cutting board use, burn it in the last night’s campfire and cut a new one back home.
Waxed cardboard is one of those standard materials I keep around the house (like 1/8″ through 1-1/8″ plywood, 2x lumber, aluminum tubing from crutches, corrugated plastic campaign signs, stop-sign-gauge sheet aluminum, compressed O2, N2, CO2, and He and a few score of liquid chemicals).
Roger likes 3-ply door-skin / 3mm / 1/8″ plywood. I’d varnish it or use a food-grade finish on it so it absorbed less water and food odor. It’s a slightly better stove base, but not nearly as good as a fire starter.
If either is hard for you to find, PM me and I’ll snail mail you some.
Back to the original question: I use canister stoves in winter almost exclusively (rather than white gas). Usually a BRS-3000T although I have to be really careful about the balance of a 2- or 3-liter pot on it. Almost any other canister stove would be more stable. A Moulder Strip makes canister stoves work below -25F, the on-off convenience saves fuel, and it’s far easier for kids to use without scorching their eyebrows off. Second most often, I’m using green, 1-pound, Coleman propane cylinders in winter if I’m sledding stuff in across a frozen lake (which tend to be really flat) and it’s the cheapest fuel if you refill them from bulk BBQ cylinders. It would take an odd set of conditions for me to use white gas anymore – a long trip with a big group and heavy stove use demands (lots of snow melt, long cook times, etc).