How can I make money online safely (teenager)?

I'm 16, and want to make some money but unfourtunately all jobs where I live won't offer employment until september. So i wondered if I could make money online in the safest possible way. By safe I mean, not filling a bunch of surveys or whatever that will end up sending me thousands of emails with virus' attatched. So please leave me some suggestions, as not only do I want to make money, I also want to subdue my boredom of doing nothing after a bunch of GCSE exams. Thank You.