I've two kits, the one I should realy make more effort to be proficient in which has char cloth, plumbers tow, a good Ragnar made steel, gun and picked up flints, small candle and maya sticks in a old biscuit cutter tin
And the kit I actually use beig lazy/practical is a firesteel, MoD fag tube full of cottonwool/vaseline gunk and Maya stick splints in a penknife pouch with a couple of wetfire blocks stuffed in the bottom.
I have made up another tinder box for Jnr (8) and he loves making sparks, he actually has more joy than I do. Yup, I included plasters in it!
Tom
PS, does anyone know of a source of soldered, rather than stamped out, round tins? Something more suitable for period trekking? My soldering skills are awful otherwise I'd make one.