Imagine for a second that you're a little kid. Your life is filled with chaos. Perhaps your parents are drug users.
At best, you aren't really sure where your next meal will come from--sometimes your parents are gone for days at a time. So you hide things that will keep in your closet, under your bed, in places that are safe.
At worst, you hide from your caretakers because you get hit if you get in the way. Perhaps there is an adult in the house who does things worse than hitting. Dark corners where there is no yelling are good places to be.