Inexpensive entertainment

When Chad was little he was always coming up with inexpensive forms of entertainment. He would rather take an old empty paper towel roll and make his own toy, than to play with a real one that he already had. When he received a new toy, he would put it aside and make something creative out of the box that it came in. He has always been this way as far back as I can remember, even as young as age four. One night while I was cooking supper, I kept hearing a bumping, squeaking noise coming from the kids bathroom. When I got in there to check it out, there was Chad, completely naked, laying in a dry bathtub on his stomach, looking up at me smiling from ear to ear. There was 1/2 inch of shampoo in the bottom of the tub and an empty shampoo bottle on the floor. When I asked him what was he doing, his reply was "I made a slip and slide and all I used was shampoo".