You never know when you are going to need a bottle opener or screwdriver. You don’t want to carry a regular screw driver with you everywhere you go though. You don’t need to when you have a Screwpop Magnetic Screwdriver & Bottle Opener. Its magnetic shaft works with standard 1″ single-tip bits. This screwdriver fits on your keyring or carabiner clip. It is also a bottle opener. Pretty cheap but very handy.