...but I 've seen a great hiding spot inside a door. I mean literally inside the wooden door, using a secret drawer that is push-to-open.
I think I know what video you are talking about. It's an excellent little trick. You are essentially hiding something in plain sight but in a place no one will think to look. If we are talking about the same video, then it's not a push-to-open mechanism that reveals the secret. You remove the hidden compartment/tube with the help of a magnet.