I have over 20 years of experience editing all kinds of projects, from books and news articles to quizzes and interactive media. Here are some of the places where I’ve spotted typos:

 

In Merriam-Webster’s dictionary

 

On a tablecloth

 

In the background design of a Nintendo mini-game (in the Hylian language)

 

No job is too small to benefit from a copyedit!