I'm afraid there are only so many things 16-year-olds can do in a place like Oklahoma (no offence). I think it would be best to just go out and eat, or order pizza and eat, alongside some cake would be nice.
By the way, happy birthday. :)
Go bowling.
Hire a room at the local cinema for a private showing. Provide snacks and drinks.
Paintballing.
Ive probably suggested this to everyone!!, But for me I want to have an outdoor movie screening for my party. Have popcorn, cinema snacks, coke floats nothing really fancy but still a memorable evening etc, and I believe there is a company called FunFlicks in America that come and provide the screen, projector and even movies in all states, (http://www.funflicks.com/oklahoma-party-... set out blankets and cushions and put lights in your backyard. Watch Disney Movies (like frozen or tangled) or chick-flicks guarantee your girls will love it!! Then let them stay for a backyard sleepover and it dosnt mean too much work for your parents!! Good luck!! xx :)
Watch movies, order pizza maybe
I'm having like 15 girls come over, where could we do and do? something fun. I like in Oklahoma so there's not much to do here.