I could have used that cage for my son. I had to tie his leash to my wrist or he would disappear. I found him in places no mother would like to find a baby either, like sitting on top of the stove playing with the dials, or under the car, or in the middle of the highway (all true). When he was 3 he disappeared. I called the police and the whole city was out hunting for him. The nice policeman said usually if kids are not found in 20 minutes, they are not found. Great. 25 minutes had gone by. They checked every pool in the neighbourhood by helicopter by then (though my son was like a fish in water) and he was not found. My paraplegic father was out in his truck, the red truck my son loved, combing the streets. I was told to stay home.
What had happened was he followed me to school where I was to pick up his sister from kindergarten and he was to stay with Grandma. I dropped something and he saw it, ran after me to pick it up and give it back . He made his way to school unscathed but school was out. He stood in the hall outside kindergarten and started to cry. The K teacher recognized him, called me, but I was outside frantic, so she began to walk him home when Grandpa spotted them and my son ran to the truck.
When he was home safe, we all sat and cried, even my father, whom I had only seen cry once in my entire life. That is why they made baby cages...for kids like him.