How can I affordably correct the 1mm gap between my two front teeth?

I was wondering how to fix it without using braces. I'm 15 and I just feel self conscious about it! Also, my gums are blocking the teeth from coming together, hence why I have the gap. But I feel really uncomfortable getting some kind of surgery on my gums! I also don't have a lot of money to fix my teeth so I can't spend a thousand dollars trying to fix it. So is there anyway I could fix it so I wouldn't have to have surgery, while being affordable, and it would last a while? Thanks!