15th Birthday Party Ideas?

Hello, I`m turning 15 on June 17th (`06).
I`ve been through pages and pages of `themes` and party ideas every year. This year however I don`t want a `theme`.
It`s going to be a CoEd party, with a low budget (basically no decorations), and casual dress. About 8+ people.
Besides my delema with who to invite (I`m currently friends with both sides of a war going on), I am also worrying over what to do.
I don`t want a `themed` party. My other friends just had a few guests and pizza and movies in their basement. Should I do that? I`m just looking for things to do at the party.
(Yeah. No dancing please.)
Thanks. =]