[John Fin] put a lot of work into his Ghostbuster’s proton pack prop with full-featured ... is actually a Krups coffee grinder with some logos adhered. [John]’s prop is no different.

For one thing, it’s blue, and outside of the short-lived animated series The Real Ghostbusters, who ever heard of a blue proton pack? So one major change was to paint it matte black and age it ...