Lost Mayhem cool detailed surfboard.
The most popular focused keychain collections are advertising, souvenir, monument, popular characters and nostalgia-related items.
Collectors display and store their keychains in several different ways. Some collections are small enough that the collector can place all of their keychains on their standard key ring. Some larger collections can be stored and displayed on dowels, cork boards, tool racks, on large link chains, in display cases, hung on walls, displayed on Christmas trees. Some collections are large enough that entire rooms are dedicated to the keychain collection.
Keychains don't hold their value as well as other collections. A standard keychain that was purchased for five dollars new may only be worth less than a dollar once it has been owned regardless of condition.