One of the things taught in women’s self-defense classes is to put your keys between your fingers and use them as a stabbing tool if you are ever attacked. If you fix your keys between your fingers before you ever open that door, you’ll be ready, but it’s not always so quickly done if you are caught unaware. If you had Brutus the Bull Dog Self Defense Keychain with your keys, you could slip it on your fingers as easily and quickly as slipping on a ring. Brutus looks like a large (3.5″ X 2.5″) key fob, but it’s made of impact-resistant molded plastic that’s as strong as metal. You’ll need to check your local regulations about what self-defense items you can carry before buying. You won’t be able to carry this on a plane, of course, but it might make you feel a little safer walking to your car or the bus stop at night. One Amazon seller has Brutus the Bull Dog Self Defense Keychain in black for $2.60; other sellers offer other colors at various price points.