A keychain is a small, practical accessory designed to hold and organize keys. It often features decorative elements, making it both functional and stylish. Keychains can be made from various materials such as metal, leather, wood, or plastic and may include charms, engravings, or personalized messages. They are popular as gifts and souvenirs, serving as meaningful keepsakes for special occasions like birthdays, weddings, and holidays. Beyond holding keys, keychains can also symbolize memories, achievements, or personal style.