Objects
Howler
A red letter that shouts its message aloud. Ron receives one from Molly after flying the car to Hogwarts. Years later Dumbledore sends Petunia a Howler reminding her of his last letter.
In the books
Harry Potter and the Chamber of SecretsChapter: 6
Mrs Weasley sends Ron a furious letter after he flies the car to Hogwarts.