That's the thinking behind the all-in-one KeySnap carabiner, which is currently on Kickstarter. The 32.1-gram (1.1-oz) device is made of grade 5 titanium, which is the most commonly used type.

I hate keyrings. Sure, they collect your keys and keychain accessories in one seemingly convenient location, but this more often than not results in a cumbersome lump of jingly-jangly bits that are ...

This one does it all. Spigen Life pocket knife keychain: $18 (Original price: 22): $18 at Amazon Don’t let the small size fool you. It’s made from a mix of titanium, metal and nylon.