The Gerber Pocket Sharpener is the "handy to have around" sharpener.  It's small and lightweight design makes it at home on the trail, in the workshop or the kitchen drawer.  The Pocket sharpener features 4 ceramic rods in both course and fine to put a quick edge on your blade.  The molded grip makes it easy to use and the lanyard / keyring hole makes it easy to keep up with.