14th bday party? ideas?!

so i dont want have a big party because that costs too much. my bday is in march and im probs going to have about 10 girls. i was thinking of going swimming or bowling or rock climbing-indoor places. but ive done all of that and been to all the places that have that stuff around here. i live near washington d.c.so anyway i feel thatd be boring. and a hotel is too expensive. so then i thought maybe just a sleepover party at my house and maybe we could order pizza, have an ice-cream bar thing, puffy-paint t-shirts, and maybe watch a movie. i dont know what other activities we could do though...? and i dont want to do stupid games. any fun activities that you can think of for at my house? anyway, thanks alot. any help is appreciated. :)