Money making for 13 year old boy?

Hi i am a thirteen year old boy and want to do some jobs online to make money, maybe 100-200 a month maybe more. I love sports, to play sports, talk about it. Particularly the chicago bulls or white sox. Maybe I could use that for making money. Any ideas at all to make some extra cash? Give ideas please, something I could do online that has to do w/sports or anything else not too hard.Also, do you know if theres anything like being a chacha guide but to be my age, because chacha guides have to be 18. Also, maybe sites where you submit ideas for iphone apps, they develop it and split the profit? Thanks!