[Varian pulls something out of his backpack- it looks like two discs, pressed together.]

I don't have a name for it yet. Maybe something like...de-ghostifier or...something. Hopefully, it will attach to you without passing through you when you go intangible. You see, these are powered by magnets, which means they'll be attracted to each other around your arm, but hopefully won't be able to just...pass through you when you go intangible, because-

[He's gonna start going on and on, using complicated scientific jargon and more than a little math. His tone is excited, regardless of if Danny follows him or not. After like...fifteen minutes of nonsense: ]

So! You wanna try it out?