People try on glasses. They say, "These make me look like a librarian." Then they buy them. Librarians are secretly the coolest people.
Also, children. Kids hate eye tests. But the Aldridge team has stickers. And a chart with pictures of ducks and houses. By the end, the kid thinks it’s a game. The parent thinks, "How did I miss that?"
And the hearing tests? Imagine a room full of old men going "Bleeeeep" at random intervals. It sounds like a convention of alien spaceships. But everyone leaves happy.