A Lost Boy in our Yard

Yest evening I came home and found an 18 month old boy playing in the yard, enjoying my kids toys. There are no kids on my block, or across the alley, so we had no idea where he came from. I set out to see if there was a search party out while the kids and Lisa enjoyed his company. After 20 min we called the police. Just before they showed up (10 or 15 min later) the boys Grandma came down the alley calling his name. Apparently she was babysitting and he wandered out of the yard. He must have seen our toys and decided it was as good a rest stop as any. In the end we let the boy take Junie's old pushcar and a toy lawnmower with him.