I use the normal Altoids tin for my pocket carry kit. I also keep more in my pack when hiking. I've been using WalMart plastic soap containers (two of them) for that. Those pack-based kits contain mostly redundant stuff from the Altoids kit - just bigger and better. A full sized firesteel, a real signal mirror, 3-1/2" (?) lockback folder, bigger compas, etc. Never being satisfied, I am currently in the process of replacing those two soap holders with a 32oz Nalgene water bottle kit. Holds even more, is waterprrof, and I found this neat little metal cup at EMS that is designed to slip right over the end of that water bottle. I've been looking for a good way to carry something to boil water in, and something to hold collected water in the first place. Two problems solved with the Nalgene kit. It's bigger or course, but I easily have the room in my packs to carry it or lash it on.