The stuff on the side of the box is probably the best I've found so far- guard it from moisture.

As for the matches, several people make simple plastic cases. Really good would be a metal one, but some are a PITA to get open. Tuck a bit of the striker in with them, with the striking surface against the wall of the case. I actually carry the striker in a similiar but different colored case that has my odd bits in it, like the sewing needles, so that there is no way it can light the matches. Down side is that if I loose that one, the thing of matches is out of luck....

I know I need to come up with a better way. I just don't like the idea of a friction-triggered bomb in my pack, even if it is a little one.