If I'm going out for a hike on a day that I don't expect weather to be an issue, warm and sunny for the most part I carry my Swiss Army knife with the magnifying glass in it, and my saliva compass has one on it as well.
I usually carry a Bic lighter with me just to be sure.
As far as the alternate method for a time and situation where sun is not dependable and Bic fails, D Battery and steel wool. That was my favorite at boyscout camp.
We had to make a fire with an alternate ignition source for our merit badge. One during the day and one at night. Mr Curtis said that was the rule...
