Heading off on a magical journey somewhere in the muggle world? It’s always good to consult a packing list to make sure you’ll have everything you need in your undetectable extension charmed beaded bag. Inspired by Harry’s Hogwarts supply list, I’ve put together the ultimate list of Harry Potter swag and gear. These cool, nerdy, and magical items will fit right in whether you’re on a Harry Potter tour across the U.K., exploring Diagon Alley at Harry Potter World in Orlando, or discovering its real-life Harry Potter London inspiration, Leadenhall Market…