If the Mjolnir were real, most of us would probably never be able to lift it. We'll bet Allen Pan wouldn't care one bit, though: not when he can easily make his own. The electrical engineer who likes making "pretend things into real things," according to his YouTube channel Sufficiently Advanced, has recreated Thor's hammer. It can't exactly summon lightning and spin like a boomerang, but you can say that it "works," because only he can pick it up... so long as it's lying on a metallic surface. See, since Pan isn't Odin's son, he had to rely on existing technology to make his own version. In order to make it stick to, say, manhole lids, he had to equip it with a powerful microwave oven transformer electromagnet that uses electric current to generate a magnetic field.