Dotd, this is the fire kit I carry with me. Quite a bit bigger then the pocket tin ones. At one point, I had everything (first aid and fire/shelter) crammed into an overinflated adventure medical kits bag. However, accessing stuff from an overfill nylon bag just isn't convenient. It certainly doesn't do to have to dump out your medical supplies on the ground in search of a match <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

Then I settled on these lock'n'lock containers at wallmart. I have one for first aid and one for fire/shelter/water. I find it rather easy to just transfer for two tupperware containers from my EDC bag to a day bag or multi-day carry.