Coin substitutes are items that can be used instead of coins in certain situations. Tokens are one type of coin substitute, which are usually made of metal or plastic and are used as a form of currency in certain places. Tokens are often used in arcades, casinos, and other entertainment venues. They can also be used to pay for public transportation, such as buses and trains. Tokens are a convenient way to pay for goods and services without having to carry around coins.