So far, my favorite lighter for use while camping is the Solo Candle Lighter:

http://www.getlit.com/nhtml/candle.shtml

I find regular lighters a pain to use while lighting fires since the firestarting material is usually tucked under small sticks. The Solo Candle Lighter is just like a regular lighter but the tip extends out to give it some extra length. It can be lit either extended or retracted.

BTW, it doesn't use a flint to spark - it is peizo-electric.

I got it at http://www.basegear.com

If you're looking for something tiny to tuck into a kit, then the min-Bic's are great!