Fun things three 14 year olds can do at a sleepover!?

I'm having my 2 close friends over on Sunday. We're going to sneak into the neighbors pool at like 2am. (the neighbors are gone over summer and let me use the pool. We'll bring flashlights lol) I live on a canal and have a dock with a floating dock attached to it and a sailboat that's fun to climb on. I live in a small house tho, so we have to be pretty quiet. I wanna do a lot of stuff outside because of that haha.