The listing, Keychain SURVIVAL KIT has ended.
Carry everything you need for emergency situations on your keychain. One small but sharp and sturdy pocket knife. One extremely loud emergency whistle for signaling rescuers and last but not least one weatherproof lighter/match fire starter. I have these on my and my wife's keychains. Whenever I go hiking, camping or canoeing I just clip it on a belt loop and even if I somehow get separated from everyone and everything else I still have the basic tools for survival and noise making with me.