Vision: Looking at a closed box: others are keeping secrets. Does the box have a lock and is there a key in the lock? If so: you are bent on finding out about other people’s secrets. Looking at a box: you are either getting a present or will have a pleasant experience.
An empty box is a warning: you are going to lose something or somebody is stealing from you.
Depth Psychology: A box is the hiding place for our secrets and experiences (as well as memories). Why don’t you open the box and see what you find? See Box (Small), Suitcase.... Dreamers Dictionary