Trick birthday candles are what I keep in my pack.
The kind that when you blow them out, they instantly relight.
Work slick as heck for starting fires.
Word of warning though, and this is from using them for years. The "trick candle" re-igniting part is only in the top 1/2 to 1/3 of them after that they are just a regular candle. But they are fantastic and they weigh nothing. Stick a few in a ziplock with a lighter and matches and you are good to go.
Screwing around with scraping flints and steels when you have frozen hands is miserable. Just light a couple candles and get stuff going.