What should i for my last day of school party?

im having a last day of school party at my house (imma a girl) everyone tht is coming is girls. Im 14 and so are my friends. We are camping in my backyard in a big tent, burning our homework in our bonfire, eating junkfood and watching scary movies and of coarse, gossiping. But tht will probably be later in the night and we are not sure what to do before that. Becuz we are riding the bus to my place and we might get bored, i just want to kinda have a back up plan. I would like to do whatever it is outside because it is sposed to be superr hot out. I dont want to have a water balloon fight because it takes alot of ballons. I am having 4 close friends over. PS i live in town