Hahaha nice! @OthalaFehu asked that question here on the forums before:
So I'll just copy and paste my original answer from that thread, if you don't mind
I started my own newspaper when I was six years old: the Kids Gazette. I typed it up in a super-old version of Microsoft Publisher (Windows 3.1, baby!) and I sold it on the counter tops of local businesses in my hometown (grocery store, pizza place, etc.) by asking if I could put a few copies out with a coin jar for payment. I also sold ads to local businesses in the paper.
I worked on the Kids Gazette on and off from the time I was six until I was thirteen, eventually hiring "reporters" from my classmates, and paid them 10% of the revenues from the issue they contributed to. Generally, the paper made about $30 an issue, and costs were low because my mother worked at a copy shop and subsidized the printing for me!
I stopped when we hit middle school and the paper's tagline ("By kids, for kids!") no longer felt true. Plus, at that point my always-entrepreneurial parents had started their hot dog cart business, and it was a lot more lucrative for me to put in some hours working for them than to slave away on a paper that would only make about $30/issue.