Sweet sixteenth birthday party?!

OK, so I am turning sixteen in March and I want to have an awesome party! My sisters have all done a glow in the dark party so i don't want to do that. I don't want to have a roller skating party because thats for two year olds, but I'm open to the idea of ice skating i just don't know what to do with it. I;m inviting fifty people all together, but i'm putting on the invitation that you can bring a friend because my friends are from all different kinds of social groups. I do have a room i can rent out that is pretty big but i don't want to rent it and then change my mind about what i want to do for the party later, so PLEASE HELP.