Has anyone opened an "inception" safe?

I'm just curious if anyone has opened a safe during a lucid dream? Something your subconscious was keeping secure for you. Any stories?

I have wanted to try this, but it is in my things to do in an LD later folder. I only have 1 or 2 things I try to keep on my mind at a time.

I have a recurring dream that I mentioned a few times on this forum.
It's about a room I can't enter. I've seen people go in only to run out of it in complete fear, I've only seen a glimpse of what the room looks like but still haven't seen what inside.
A big part of it is an animal that I speak to. It told me I'm not asking him the right questions.
I have a feeling once I know the right question to ask him, I will already know the answer.