Fuel: Ear Candles

Well, didn't set fire to anything this time, but not very practical as a fuel source.

Ability to boil a litre of water from cold is abysmal (even if you could get both ears aflame at the same time) and cost is quite high. Stocked in only a few places. Advantages: no problem getting them through customs (unless you go for the more exotic perfumes); being hollow, they are quite lightweight and could double up as chopsticks for fat-fingered folk or firelighters.