A geocoin is a metal or wooden coin minted in similar fashion to a medallion, token coin, military challenge coin or wooden nickel, for use in geocaching. The first geocoins were developed by Jon Stanley (aka moun10bike) as a signature item to be placed in caches.

Many of them are made to be trackable on various websites to be able to show the movement around the world and visitors to be able to leave comments when they find the coin.

A geocoin typically has a diameter of 1.5 inches (38 mm) to 2 inches (51 mm) and a thickness between 0.098 inches (2.5 mm) and 0.16 inches (4 mm). Coins with the size of 1 inch (25 mm) are called microcoins, because they fit into microcaches (e.g. film canister). The smallest geocoins with a diameter of 0.5 inches (13 mm) are called nanocoins, and have been sold since 2009. If the diameter is larger than 3 inches (76 mm) the geocoin is called macrocoin. It has the famous saying of "that's not a coin it's an anchor".

A custom coin is a traditional yet unique gift to exhibit one's membership, award excellence, or commemorate a once in a lifetime event. Have your employees or club members take home a piece of the community they belong to by embossing a symbol or having your organizational values written on your custom coins.

Challenge coins have a rich history filled with bravery, perseverance, and unity. These characteristics have come to define the indomitable spirit of exceptional individuals. That is no doubt why so many military units, clubs, teams, businesses and organizations uphold the tradition of carrying Military Challenge Coins year after year.

A challenge coin is a small coin or medallion, bearing an organization's insignia or emblem and carried by the organization's members. Traditionally, they might be given to prove membership when challenged and to enhance morale. They are also collected by service members and law enforcement personnel. Historically, challenge coins were presented by unit commanders in recognition of special achievement by a member of the unit. They could also be exchanged in recognition of visits to an organization.

A geocoin is a metal token minted in similar fashion to a medallion, token coin, military challenge coin or wooden nickel, for use in geocaching, specifically as form of a calling card. The first geocoins were developed by Jon Stanley as a signature item to be placed in caches.