I added a mini-Bic lighter, a few squares of toilet paper and some additional (larger) sheets of Rite-in-the-Rain paper to mine. I know Doug is really enamoured of the Spark-Lite fire starter, but I found it wasn't very effective at igniting most tinder, compared to the BlastMatch or a good Mag-flint block; however, a half-dozen strikes against a single-ply piece of TP or tissue paper will generate a flame and that will ignite a piece of paper. (When I took the week-long Bushcraft course from Mors Kochanski last month, another student and I were able to get the campfire going in the morning after a heavy thunderstorm the night before had left all our kindling bundles damp and hard to ignite. I got a flame going using some TP (that had been under shelter and was dry) which he used to ignite a piece of writing paper from one of the other students' notebooks; we were able to use this to ignite the kindling bundle and from there we had a good blaze going in no time.

I would probably want to carry a Kleenex pocket-pack in another pocket, along with a large space-blanket and the SAS Survival Guide. I will probably add a piece of a plastic straw packed with cotton balls and sealed at the ends.

Any kit, of course, is a compromise between what people will need, and what they will carry. I'm not very confident with my fire-lighting skills so I would want to carry extra.