Luna and her twin sons, Lorcan and Lysander, are gathered around the kitchen table having just returned from Flourish and Blotts in Diagon Alley. Lorcan's eyes widen when he sees one of the books purchased for his and his brother's first year at Hogwarts. He picks up the book.
Lorcan: Hey, Mom! Look! Fantastic Beasts and Where to Find Them by Newt Scamander. He's got the same last name we do!
Luna: Yes, that's because he's your great, great(?) grandfather.
There's a knock at the back door. Lysander jumps up to see who it is. He opens the door and Ron Weasley is standing on the other side.
Ron: Hey, Luna. Just letting you know I've got the hedge clippers Rolf said I could borrow. Got anything to eat around here?
Luna: Take a couple of cookies from the jar.
Ron removes the lid, takes out two cookies, and places the lid back on the jar.