I originally posted about those mini torches. It’s kind of a cigarette lighter from Hell with a bigger, hotter flame than a Bic lighter. And with the flat base, you can set it, running, upright and use two hands to stretch cordage or fabric in front of it to cut/seal it. In a pinch, you could boil multiple pints of water by directing it at the bottom of your pot, hence, maybe use it for a SUL weekend trip.
I recommend them for that survival kits all Alaskans keep in their car and airplane.
The mega-lighter is not as good for starting a fire as that style of torch Jake posted because the flame isn’t as big. And, yes, Jake, that would make a good fire starter. The trick, I’ve found, to using a flame like that as a fire starter (Winter Solstice bonfires are a big thing up here and the wood is always wet and frozen) is to pack the wood very densely. More densely than you southerners do in the summer with dry, thawed wood. Then, when you get a volume of wood lit with the torch, the wood is putting out enough BTUs (zetta-electron-volts, for you non-Americans) to ignite the adjacent wood.
But I’ll repeat my fire lighting story since it’s UL – it involves bringing no additional gear: I somehow managed a tricky beach landing in my sea kayak, but my wife was half a wave cycle off and a breaker crashed down onto her, blowing in her spray skirt and totally wetting her out. On a remote Alaskan beach. So I grabbed the canister stove, scooped out a trench in beach, set the lit stove in the trench, and piled wood on/above the burner head. I very quickly had a solid start on the wood fire, reached through the trench and pulled out the stove.
Another emergency fire starter is square(s) of waxed cardboard from grocery store produce boxes. Go dumpster diving behind the grocery or ask the green grocery or sometimes I’ll see them, inappropriately in the regular cardboard recycling bin. A 1″x1″ or 1″ x 2″ provides a lot of fire starting capability. A 4″x4″ to 6″x6″ square also doubles as a stand for your canister stove on rough ground or snow and as a cutting board for food to slice cheese or salami, etc.