Hey Naomi!! I am making money because I got an actual, in-the-system job with my county as a lifeguard for the summer!! I guess you can say I am not really a "child," because I am 15 going on 16...
What I would do when I was younger was babysit and the classic lemonade stand at the end of the driveway!! :D It worked!! :)
You can always ask for an allowance from your parents, or ask to have them pay you to do big jobs.
Good luck girl!!