I'm a girl, how can I stimulate myself without the use of a toy?

So I'm kind of young to even think about this stuff, but I'm 13 and I started masturbating when I was a little kid, maybe six or so, before I knew what it meant. I would make a fist and put my other hand over it and press it against my clit amd hump it until I orgasmed. I didn't know what it was, all I knew was it felt good. I still do this occasionally but I can't orgasm to it anymore. It just doesn't turn me on. I've tried using my fingers, but I can't quite get the hang of masturbating. I do have an electric toothbrush, but I don't know how to use it and don't want to with my mom home. I'm too young for a toy and I really want to masturbate so badly! My body is craving it right now, but I don't have another person to help me out. What's the best way to masturbate??