Key rings are small, circular devices used to hold multiple keys together. They are typically made of metal or plastic and come in various sizes and designs. Key rings help keep your keys organized and prevent them from getting lost. You can easily attach or remove keys from a key ring, making it a practical accessory for anyone who carries keys regularly. In addition to their functional purpose, key rings can also be decorative. Many people choose key rings that reflect their personality or interests, such as those featuring favorite sports teams, cartoon characters, or hobbies. This way, a key ring can be both useful and a fun way to express oneself.