no vibrater

So I just started masturbating and I'm 17 years old. I haven't orgasmed yet and I really want to use a vibrater. However, I REALLY don't want that in my room or my parents to know I have it. So, I have read about using the back of a hair brush and other house hold materials, but I'm worried to use anything until I am given the "ok"/ "it works" mark because I'm still a little nervous. Anyone have a good tool I can masturbate with?!