how can I masturbate

I don't want to use a toy cause I have no extra money because I'm saving for college, and no place to put it as my mom occasionally picks up my room. I don't have a detatchable shower head. just a normal one. and I'm getting bored with my fingers and hairbrush?? ps I'm 17 so no worries on giving sex advice to a little child 😂 thanks in advance 💞