How a petroleum-distillate powered pocket heater works. (naptha)
17:49
Making custom heater pads and then destroying one
14:53
USB flesh-burning pen for ladies. Because apparently they do that.
18:25
Reusable handwarmers that get hot by freezing
6:48
How A "Rope Lighter" Works...Windproof, Flameless, & No Extra Fuel Needed !!!
10:48
Zippo Refillable Hand Warmer Review- Great Outdoors, But Indoors...
8:52
Handwarmers, S01E06: Rebuilding a Zippo Handwarmer Catalyst Head with Springs
21:13
"Miracle" heater teardown - with schematics
16:48