These vintage-style Harry Potter travel posters created by Caroline Hadilaksono would make an excellent addition to a kid's room, or even a young adult's dorm wall. Heck, they'd look good in your grandparent's living room - fitting for a piece of fantasy fiction that's already an established classic.
Not that you'd really need a promotional campaign to plug the wizarding world as a travel destination, since I'm guessing most of us would run headlong into Platform ¾ at King's Cross Station if given half a chance. Still, I love that these prints wink at the fantasy, and could potentially blend in with any décor without looking dated or kitschy.
Caroline sells her work through Gallery Nucleus. Each poster is an 18"x22.5" print on archive watercolor paper and retails for $50. She also has made-to-order sets of postcards that sell for $22 available from her online shop.