I unfortunately have a smaller amount of money than I'd wish to have.So I can only invite the girls over = (. What can I do with juist girls ?

you can have a scavenger hunt in town... split the girls into 2 teams and each team gets a car and a poloroid camera or video camera and make a list of things to find.. like *a a picture of the girls with the dilervery man by his car from pizza hut* *a picture of the girls infront of a mustang* and stuff like that....and they have to take a picture or video it to prove it and the first team back to the house with the list completed wins .... toilet paper a friends house.... rent a movie/go to the movies....jam to some music.... go bowling.... camp out in the back yard *make it fun and get some guys to come out and scare the girls*