KeyDisk
Ditch that janitor-like bulge of keys you carry around and put them back in your pocket where they belong with the KeyDisk. Built using sandblasted and anodized aluminum, it weighs just over an ounce, measures just two and a half inches across, and holds up to six keys using aluminum screws places through the holes, letting you expose only the one you need at the moment, while keeping the rest out of sight. You can even attach it to a standard keychain — but what's the point of that?