14th Birthday Party Activity Ideas?

I am turning 14 in August and I like to plan ahead for my party. The thing is I don't know any activities to do at my party. It's a mixed party between boys and girls, and I'm thinking it might be a glow in the dark/black light party. All my other birthday parties have either been a sleepover or we have gone bowling or had a natural kids' party with natural kids' games. I don't know what to do for my party this year since I've already done that kind of stuff.

Can anyone please suggest some activites we can do at my party or some things they've done at their 14th birthday party, and maybe some themes for the party as well that would be great.
~thx