New ways to masturbate?

Fanny

I'm 15 and I have been masturbating for 2 years now but I've always done the same thing. When I masturbate I just play with my clit and it's starting to get harder to cum that way. I've tried fingering myself but I just don't know how to do it right and I'm too young to buy any kind of toys. I'd love to learn some new ways to masturbate if anyone is willing to help. Thank you!