My wife's six year old niece always has new business ideas. She just started selling roasted peanuts. And she also takes orders. Of course we always order roasted peanuts from her.
She is cute! I believe she would be a successful business person when she has grown up.
When it comes to making money, the only thing the youngest can think of is taking a walk and finding coins on the street.
It doesn't help that she's six years old and cute. If I roasted peanuts and tried to sell them, I'd be berated because I wasn't giving the things away. I can smell those peanuts right now. I'd be her best customer.
I used to pick gourds and sell them to people to paint. It didn't hurt that I painted lots of them as Santas, ghosts and snowmen during the proper season. I always sold out of them. We were lucky and lived on a farm. I started about age 12.