Wow, that's a lot of money, and in only 6 months that's like what some people make in a whole year. what type of stuff will your parents let you do? Well, I am going to say some ideas.
Car wash
yard sale
Save all money you have from now on (If you get chore money)
a pet service
babysitting
you could ask to clean some parts of a house for money.
Hope it helps sorry if it doesn't. :(