1. Gerber LST usually, although I have a number of suitable knives, and which one I carry depends on my mood when packing (mini-LST, Gerber Gator Grip, Swiss Army knife, etc.) I normally carry the small SA Classic (Wenger version) in my pocket all the time, so it usually comes along too.

2. I have one of those little thumbwheel-and-flint fire starters.
Maybe it's a Spark-Lite. Anyway, it looks like that. 2/10 of an ounce including the little fuzzy tinder things that came with it.
I still carry a matchsafe, too.

3. Bic lighter or mini-bic.

I've very seldom made a fire...I can only think of two times, and neither time was my idea smile I'd be pretty inept if I had to start one under adverse conditions.

OK, three times. Once we camped where some other people had a fire and we kept it going after they left, since it was kind of rainy and cold. They had also built a lean-to out of freshly cut branches. "Scouts," supposedly. I held my tongue.
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Always remember that you are absolutely unique, just like everybody else. -Margaret Mead