If you can't find trioxane, stop by Wallys and get a box of these things. They're fairly cheap and they light and burn great. One will last 15 min or so and they burn hot. They have them with their heaters.
Bic lighters: I much prefer a Zippo
. They'll light no matter how cold it is and you can set it down to use both hands to get things going. You don't have to keep a thumb on the lever. If your fingers are really cold, you can light it on your leg or coat sleeve. You don't need to take off a glove. You can get them for under $15 and you only have to buy 1. They're guaranteed for life.