A Gross of Raisinets
Products are placed in films for a reason as it can really impact a company’s sales. This is what happened after Harvey Korman stopped to buy a snack at the movie theater by the end of the film. During all the chaos, he stopped to buy a box of Raisinets.

Source: YouTube
Mel Brooks stated later that this led to a real increase in sales of the product. In 1975, he told ‘Playboy magazine,’ “We mentioned Raisinets in ‘Blazing Saddles,’ and now the company sends me a gross of them every month. A gross of Raisinets!”