Riding discreetly on your keychain, the aptly named Driver offers a good deal more than screw-turning bona fides.

Ideally they are made of just one piece (no tiny bits to lose or pivot points to break) and have a form factor that’s flat ...

But really, the reason it's being featured here over other similarly constructed tools is because it's just so dang small and cute. It's a good size for a keychain accessory -- about 2.5 inches ...