Where would you hide your idea?

Descriptive paragraph that describe the room and place where one would find your idea (treasure).

My closet

You see clothes like pants, vests and dresses. On the ground you see empty bags. Inside the closet on the side you see there on  the shelf that they have books. In  the closet  you see two shelves. You see stuff I don't know where to put.

My treasure

My treasure is in a safety case with a lock and my safety case is in a locked metal box. The box is on the ground in my closet and is about 45xcm45cm big.

How to open it

You need the key of the metal box first and then  the key of the safety case and finaly you  have the secret idea. The 2 keys are a normal size and sliver.