A lapel pin is a small pin often worn on the lapel of a jacket. Lapel pins can be ornamental or can indicate wearer's affiliation with an organization or cause. Before the popularity of wearing lapel pins, boutonnières were worn.
A medal or medallion is a small portable artistic object, a thin disc, normally of metal, carrying a design, usually on both sides. They typically have a commemorative purpose of some kind, and many are given as awards. They may be intended to be worn, su
A keychain (also key fob or keyring) is a small ring or chain of metal to which several keys can be attached. The length of a keychain allows an item to be used more easily than if connected directly to a keyring.