I'm like the queen of girlie movies:
-sweet home alabama
-maid in manhatten
-sixteen candles, pretty in pink (cult 80s films)
Goodie bags with lipgloss, cheap nailpolish, maybe a makeup brush, etc. sound good. You could do make-overs, mani-pedis, and maybe make a keychain or something (seeing as how you and your friends will soon be driving).
get sparkling cider and serve it in those cheap champagne glasses you can find in the wedding section of craft stores.