HARRY POTTER Mug - Hogwarts Crest. Perfect gift for every fan of the world of witchcraft and wizardry. This themed mug features the red Hogwarts crest, featuring all four houses, on one side and the Harry Potter logo on the other. The inside base of the mug features the same tea leaves pattern of the Grim shown in the bottom of Harry's mug in a Third Year Divination lesson. A perfect gift choice for a true Harry Potter fan.