Many pins depict the various Olympic sports.
Collectors will find many styles of sports pins, some of which are associated with a particular Olympics, others with a country or one of the sports federations. Some are associated with corporate sponsorship. This page contains 9 pins added on May 31, 2000. I have never seen so many pins from one Olympiad as from the 1980 summer games in Moscow. They are made of a lightweight metal, possibly aluminum, and come in sets of different shapes and sizes.