Elijah chose to dress as Ron Weasley for his Halloween dress-up day at child care. He thought it was a brilliant idea, since Ron has red hair, a pet rat and drives a flying car.
No, Elijah hasn't seen the movies or read the books, but he's looked longingly at the books and studied the cover of Harry Potter and the Chamber of Secrets many times, which is how he knew about the hair and car. The rat he found out about when we were googling images to check the outfit. He's now quite fond of his Scabbers!