What to do over the summer?

Today was my last day at school and I have nothing to do over the summer. I can not stay at home and relax like I planned. Due to the fact my mother and grandmother keep yelling at me, making me do stuff they do themselves, being inconsiderate to me but expecting me to be considerate of them and they keep double teaming me. So if I stay here, I'm going to end up going to jail (just playing, but I am going to go crazy).I'm 15, broke, too late to get a job and probably can't go to friend's house because then they are going to want to come over my house which I don't want them to. What can I do so I won't go crazy?