"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." From transforming graduation gowns into Hogwarts robes to handcrafting wands that would make Ollivander ...

If you know the colors and creatures of the four Hogwarts houses and that the spell is "leviOsa" not "leviosA," then you're probably planning to attend A Celebration of Harry Potter this weekend at ...