Nice little gadget, but personally, I'm looking for what it brings to my current hiding place ...
1) Where is that hiding place so we can fully evaluate the effectiveness?

I like the idea of mounting under a drawer but really you can mount to any wood surface (more surfaces if you switch out the screws depending on your need).
1) Lol
Sorry, maybe I look too much at Mac Gyver being a kid but a basic double side scratch cost nothing and can be glued everywhere.

This is why I suggested a pencil holder with a hidden compartment for the Ledger wallet or any other object that might look normal in a room.
Any decorative object that would not look out of place or too unique or expensive.
I would stay away from bright colours, because they would attract too much attention.
Glad to see that you went retail with this. Good luck. ^smile^