I duno why ya posted this topic in here... But, anyway, here's what I do:
Cut three lawns every week, $25 for each for a total of $75 (yeah, I passed math class, lol).
Set up people's computers, and provide Apple tech support for maybe 5 or 6 clients, who usually give me $30-$40 a visit. I also do some basic stuff for Windows folks, like install Virus software and malware protection.
I clean my Nana's house for $50, once a month.
I wash/wax/interior detail maybe 1 or 2 cars a month for $40 each.
I work for my aunt at her school during the summer for $10 an hour. For example, I made $80 this week doing that.
In the winter I plow and snowblow peoples driveways with my tractor.
And, I snowblow/shovel for my uncles company ($10 an hour), as he does strip malls and plazas.
In the fall, I load gravel into trucks at a gravel pit when every they need me, and when I feel like working.
I usually get about $325 a month, and yet I don't have a "real" job with set hours... That's the way to do it, because you can pick you own hours! Plus, if I don't need the money, I don't have to work.
And I'm 15.