All the tools mentioned so far have a similar form factor — that of a foldable knife or pair of scissors. They can be used as keychains, but most of them aren't exactly subtle in terms of design.

The good news is keychain tools exist, and a lot of them offer more than one function. Amazon has a wide range of multi-use tools that you can bring with you wherever you go and can be helpful in ...

Many models even come with built-in key rings so you can easily add the SAK to the other tools and gadgets you'll want for ...