Here are the two ideas I've been kicking around in my head. The point it to make it look like a tool closet that I had built a few years back. Completely light sealed (hopefully silent). Something I can keep locked and if ever questioned by my landlord on a inspection (she hasn't even called once since I moved into the house) I can just tell her that I have $10,000 worth of tools I don't want stolen.

I left off the door, but the door will go from the bottom to the top, so you can't tell there is a top chamber. just looks like a large wardrobe closet

Idea 1


Idea 2