I'm no Pinterest queen, but my friend Dana wanted to have a Harry Potter birthday party for her daughter. Now, you can find tons of Star Wars and Frozen party supplies, but since the Harry Potter books and movies have been out for years, their product licenses haven't been renewed, and hardly any party stores have any HP materials. So it's a DIY party for the most part--our local grocery store does do HP cakes with plastic figures on them, so they've apparently kept paying the license fee.
Anyway, I made wands for each Hogwarts house, dipped in white chocolate and then rolled them in sugar or sprinkles showing the main color of their house's crest--red for Gryffindor, green for Slytherin, blue for Ravenclaw and yellow for Hufflepuff. I also rolled some in rainbow sprinkles for any Hogwarts faculty, parents or random Muggles who wander by.
I also printed out each house's crest, and the main Hogwarts logo, and taped them on the glasses for each house.
Dana bought some of those gold-foil wrapped Ferraro Rocher hazelnut-chocolate candies and cut out a pair of wings for each one. Voila, golden snitch!