Need the same thing for my mothers house in SW PA (she has lost 2). Only thing I would add is some fishing line (trip wire) with an attached baggie full of some curb paint (want to know who did it) so that after they try and wack it they and the car gets tagged. Go explain that to your daddy...
What I'm looking at right now is the Ikea doors, build your plywood box to fit the doors. Ikea doesn't say you have to buy a complete cabinet, take advantage of their mass production doors
They offer a stainless steel option which is what I'm going for...