Uhm…First of all, wrong place? Suggestions for the game are supposed to go into the Drawing Board, not into the Garage.
Second, What’s up with the Name of this Thread? q.q
And Third, You don’t tell us much about this ‘device’ you want to get integrated into the Game…
So, from what I can tell, you want to have some Kind of Trap, probably a Noisemaker in a Fridge/Locker, from what I was able to decipher, which would lure in Zombies and kill them by the dozens if enough zombies are there? That…Prolly won’t gonna happen. While I definitely support the Idea that Zombies should be able to hurt each other in order to get to you, a simple Fridge or Locker wouldn’t suffice for this task. Like, at all. Did you see how those Zombies tear through all kind of furniture and cars when they are aggroed? They destroy metal racks, bookshelves, doors without much problem, and the stronger ones even break through walls, if left alone long enough. They’d shred your Refrigerator/Locker after a few seconds, and the Noisemaker will probably get destroyed in the same time, therefore making the Trap a waste of possible useful ressources.