Invisibility Cloak

An Invisibility Cloak hides whatever it covers, and one arrives as a Christmas present: a parcel left for Harry with an unsigned note saying the cloak belonged to his father and is now passed to him. The fabric is strange, fluid and silvery grey, like water woven into cloth, and a wearer vanishes entirely, though the cloak covers only what it covers, and careless feet have a way of showing. Such cloaks are rare and highly valuable in the wizarding world. For a curious student in a castle full of rules, its uses suggest themselves immediately, beginning with the out-of-bounds shelves of the library, and Harry quickly learns to count it among his most precious possessions.