I carry them with me every day.

When they are in a match case, I load them half up and half down, with a cotton ball at each end. Keeps them from rattling, prevents the "poof-bang" sound of an accidental ignition of a bunch of matches, and gets one or two more in the case.

With a flat pack, I put them into a strip of cardboard, half in one way, half in the other, so that even if they do light, I'm likely to only loose half of them. (Although everything else in the tin might be pooched as well, though.) That goes into a heavy duty, mini zipper bag, then into a tin of some sort. I carry them like this for both my PSK (in the woods) and the survival module in my bag of tricks (around town).

In either case, I give them a double coat of clear shellac- they burn hotter and they are more resistant to moisture. In the flat packs, I put a bit of emery board between the strips if I'm carrying two, or taped down if I'm carrying one; in the case, I cut one a piece of one to fit, and make sure that I've got the cotton ball in there good. I find it holds up to moisture better than the striker on the box, and it ensures you have a striker that is as dry as the matches. (I used to not do that, but this place is good about pointing out your erroneous preconceptions.)