When I was 11 years old, I started throwing papers for a living. For an 11-year-old, $150 per month was quite a living. I found that if I was willing to work hard, I could make more money and therefore have more money to spend on the frivolity of youth.
And, yes, I was frivolous.
Shortly after I turned 12, I was invited to sell papers door-to-door in the evening. These were for neighborhoods in which the newspaper didn't have a strong presence such as new sub-divisions.
I would get a bonus for each subscription I could sign up… I think it was like $2 per sale. In addition, I could earn bonuses for hitting certain milestones.