Need some cash? This little tube ensures you've always got a Benjamin tucked away. It's machined from solid aluminum or brass that's naturally rust resistant. The carrier is just big enough to hold one bill — which can only be accessed by taking the device off your keychain — and thanks to O-rings at both ends, the key ring attachment is totally waterproof.

Recognized in the machining industry for uncompromising quality in design and manufacturing, Sunshine products was founded in 1976 with a single metal lathe. Today, they work with computerized, state-of-the-art equipment, but their homegrown penchant for quality persists.