I carry one of those peanut lighters, and have for a couple years now. Its main use is melting cord ends; its attached to my keychain though, and never gets lost (of course, now that I have said this, I cursed myself). I have a photon light on it as well, with a paracord fob. Thats about it.
Another place to check for small ferro rods, without a grip. They have a variety of sizes of them to choose from.