"Bee in your bonnet, Harry Potter?"
—The Sorting Hat makes a pun of this term in 1992.[src]

A bonnet is a type of headgear for both sexes, which is often made of soft material and has the absence of a brim; females are more commonly seen wearing this headgear than males. In 1992, after Harry Potter asks the Sorting Hat for a second time to ensure its choice to sort him into Gryffindor was right, it asked him upon introduction whether there was a bee in its bonnet.

Twilfitt and Tattings sold bonnets in a variety of colours, including black, green, brown and blue.