Check out this one-of-a-kind GHOSTBUSTERS Proton Pack Prop Replica.
Constructed over many months to precise detail that matches the original packs.
Made from metal, wood, and plastic.
The seller says:
Everything from the tiny toggle switches, to the A.L.I.C.E. pack frame were carefully selected to match those of the original packs. The measurements are exact to the packs from the films. The cyclotron and powercell both have working lights that light up with the flick of a switch! An access panel on the motherboard allows for easy access to batteries. This is not thin vacuum-formed plastic, or a brittle fiberglass shell. This is a heavy duty pack that is made to be worn and can take some abuse. The weathered paint and decals make this proton pack look as though it has done its share of bustin’ heads – in a spiritual sense, of course!
It’s currently for sale on Ebay for $800 and, based on the images and description, would make an awesome addition to any prop replica collection.