Fun Fall party ideas?!

My birthday is in november and i know thats far away but i plan things early. So i want to have it outside on a saturday, I have a pretty big backyard and on the side of the house theres a small garden so i think people would enter through there cause my house is a mess! i think i want to have a table on the grass with food and presents. i love paramore ftsk school boy humor 30h!3 1-800-zombie, all those types of bands. And its going to be a sleepover so what should we do at night. by the way im in middle school. also any theme ideas?