Why do children do this?

I came home from work one evening and noticed tucked neatly under one of our dinning room chairs, my wife's shoes. My eldest daughter had decided that these would make the perfect hiding place to store some treasures that she had found. These included:

• A magic wand
• a box of fairy magic things
• a decorative flower ornament
• 2 lipsalves
• some eye shadow
• our kitchen timer.

Why she thought that the shoes were the perfect home for her hoard I don't know, but I'm sure in her mind is all made perfect sense. Very cute... that it until she hides the car keys or the TV controls!