do the paintball fight party!!!! or better yet, try going to a roller skate rink with a few friends. I did that once, but it was not that good because none of my friends showed up. then again, that was kinda a shared party for me and my bratty sis. she invited 2 friends, both came. I invited 4, and none came.
Maybe don't do a "party". If you want, just go out somewhere with family or friends. Do whatever you like or want to try. Some ideas are rock climbing, ice skating, movies, paintball, sports game, or the mall,