Historically, fobs were small decorative items attached to pocket watches, worn by men as a sign of status and personal style. These watch fobs, often made of fine materials like gold or silver, were functional yet ornamental, used to ensure that a pocket watch could be easily pulled from a waistcoat pocket.

As time progressed, the concept of a "fob" evolved. In the mid-20th century, the term began to be associated with keychains or key holders, which were practical items used to keep a single key or a small bundle of keys together. Early versions were often simple and utilitarian, but over time, the materials and designs expanded, with leather, wood, and metal becoming common materials for creating more durable and stylish versions.