When I was a child, I was amazed by my mom's super-ability to find something I had been searching for the moment she walked in a room. It seemed to me, she had x-ray vision. There was nothing she couldn't find.
Now that I am a mother myself, I now understand the secret to her power and I am happy to amaze my son with the same ability. The secret? A child who considers "looking" for a belonging to be an act of taking a step into one room, looking in one spot, leaving the room without another sideways glance, and considering the article lost forever.