This wallet pen idea is great. You put something useful in a handy unused space in your wallet (the fold) and it is always with you and it is not jumbling around in your front pocket. It doesn't even increase the bulk of the wallet. Now that's a good idea.<br><br>Even better, a small magnesium firestarter like the Military Match from Done Right Manufacturing like Doug carries on a key ring would also fit in that space. Now you have a firestarter on hand even when you don't have your kit with you.<br><br>I know one of you guys posted about carrying a lighter flint in your wallet, but this seems like a more robust solution. Seal it in some shrink tubing and add a pocket clip from a mechanical pencil and clip it to your wallet.<br><br>