cameoed

A cameo is a small appearance or performance by someone famous in a movie, TV show, or other work.

You might see a celebrity like Beyoncé making a quick guest appearance in her friend's music video - that would be a cameo. It can also refer to a small decorative stone or shell with an image carved into it. In this case, the term is borrowed from ancient art where cameos were made by carving images into these stones.