What will you do when your matches get wet?

So fire, duh. Very important, and I don't know about you but I haven't gotten friction fires down. So until that day I rely on modern tools. So of course I carry lighters and matches and the like, along with a firesteel. A very neat tool I'm sure you've seen Bear Grylles use, and his knife is where I got the idea for modifying my knife.

This flint is kept on my keys at all time, it can get wet and still produce a spark that's over 2000 degrees. Unfortunately the striker that it came with was junk, too small, and digs into your hand every time you used it. So I generally use my knife as a striker. The Bear Grylles knife has a surface on the back specifically for this purpose. So instead of buying a new knife, I just modified the one I have. Three seconds with a grinder and I have a perfect striker surface.