Have any Birthday Ideas?

I'm turning 15 in a month and my parents keep bugging me about what I want to do. I've been thinking about it a lot and I can't think of anything I really want to do. I want to do something really fun with my friends, but I don't just want to have a party (i'm not a party person). I've been trying to do some sort of activity to do with my friends, but everything we think of I don't want to do. So far we thought of going skating (didn't want to do because i've had 6 of my birthdays there), bowling (boring), movies (not fun enough), sleepover (done that for the last 4 years), going to a haunted house (too scary), going to play mini golf (boring), go kart riding (boring), having a Halloween themed party (can't do that for a complicated reason), going to a theme park (don't like rides that much). We thought of going to a concert but my favorite band (Paramore) aren't touring near my birthday, and I don't really want to go to a different concert.

So you see every time we think of something, I don't like it. I want my birthday this year to be really fun and different from my other birthdays. I would really like to go like on a trip or something, but I think that would cost too much. I live in Tennessee. So what i'm asking is are there any places that aren't too far from or in Tennessee that would be fun to go for a birthday?Or just any other fun ideas to do for a 15th birthday.