Your keys dont have to be bland. For many of us, a keychain is one more way of showing who we are as a person — another accessory that can be customized to fit our taste. Whether you prefer a sleek modern design or a tiny figurine of your favorite character dangling from the ring, keychains make keys a lot less boring. You can put a lot more on your keychain than just decorations, though. From daily necessities to useful gadgets and even some tiny pieces of tech made for amusement, there are...