Who knows. Probably candy or fire crackers.
But I do know that at about the 4th grade, 9 years old?, I developed a dream of building a gokart. Since one had never been built nobody called them that, but it was a small gasoline power vehicle for someone my size. One of the things I needed was a motor. My father found someone selling one off of a grain elevator. Single cylinder, small, but he would let me make payments. I think the price was $5 or so. I did random jobs and paid him a dollar a month. Then it was mine, mine, all mine.
The rest of the machine was made from scavenger parts. And stuff that I got my father to make for me. He was a machinist. I used a discarded metal rack from a grocery store, the plywood from the bottom of a railroad boxcar, etc. I finally got it built when I was in the 7th grade, and drive it in the July 4th parade.
I know, TMI.