Grocery checkout girl
I ran across an article about the checkout girl (actress Tracy Connor) in Home Alone - excerpt:
Connor, currently an improv coach, with roles in the upcoming movies “The Choices We Make” and “The Sixth Floor,” is similarly recognized by fans. In “Home Alone,” she’s the supermarket clerk who quizzes Kevin when he shows up solo with a cart full of food and other supplies.
The scene actually was improvised, Connor says. And then almost all of her lines were given to other actors. But when the film premiered, there was Connor’s unscripted back and forth with Culkin; it had made the cut. She was thrilled, tightly gripping the arms of friends who sat on either side of her at the film’s premiere.
While her role required only a day of shooting, and she’s onscreen for less than two minutes, Connor shares Whitney’s pride in having been part of something that grew far beyond anyone’s expectations — something she characterizes as “a sparkly thing” in her otherwise normal workaday existence.
“If that was the extent of my 15 minutes of fame,” Connor says, “it’s paid huge dividends.”
https://cso.org/experience/article/15861/home-alone-actor-remains-grateful-for-a-part