Public Speaking. I am starting to do it now and I'm 14. My first speech is next week and its on Cyber Wars! Then every speech I give (20-45Minutes) I get $25 -- $50. Its a small amount, but its well worth it, and who knows someone in the audience might ask me to speak somewhere else
Just get really good charisma, and don't be shy. Those 2 combined = anything possible.
See if you can make money online, Or you could set up a service in which you can repair bikes and other items, Have you tried selling some of your junk that no one want's on ebay, And it might be a good idea to see if theres any work needed in your shop's near you! Not sure how grately you would get paid though.
honestly fast food is going to be your best bet at 15. you can try online jobs too.
Local Grocery stores are the best places for 15 year olds to work, I worked at one when I was 14.
If you like coffee then try a coffee shop, I see a lot of teens working there when I go to my local Coffee Shops.
Haha like Imario said, you can make money online
- Go into the: how to earn money tutorials
Being 15, its very hard to find a job. You will have better luck when you turn 16.