Official Harry Potter Merchandise
Without You-know-who, we wouldn't have any Harry Potter. Although you should not mention his name, he still deserves to be immortalized on a portrait. Perhaps you don't dare dedicate a whole mug to him, but if he's just one of six powerful magicians, you might get away with it. If the reaction is negative, you'll get a chance to show your proficiency in black arts.
Your favorite Harry Potter characters adorn this mug. The portraits emerges when the heat-changing mug is filled with hot drink. A great way to find like-minded magicians and resume the revolution.