Then I remembered I keep several of these around. Perfect for opening a nail nick folder and gives you a sharpener in a pinch. Before anyone sneers at the little key chain diamond sharpener, I've used one sitting in Kuwait to repair the edge on a former SEAL's folder (followed by the bottom of a ceramic mug and then stropped on the back of a leather belt) and out backpacking. Run what ya got, but try to have what you need. Alternately I could have added any of the keychain micro tools I have laying around.