A cereal box prize, also known as a cereal box toy in the UK and Ireland, is a form of advertising that involves using a promotional toy or small item that is offered as an incentive to buy a particular breakfast cereal. Prizes are found inside or sometimes on the cereal box. The term "cereal box prize" is sometimes used as a broader term to also include premiums that can be ordered through the mail from an advertising promotion printed on the outside of the cereal box.