Have a girly evening! Invite your closest friends over and either get them to bring snacks or make a simple and easy buffet for them. Then play some low-key drinking games/watch movies/chill together. For more ideas I'd recommend 'The Ultimate Girl's Night In' by Jacqui Ripley, it's really good!
I arranged for myself and some friends to go bowling to all star lanes and it was sooo reasonable! including the lane, meal and a few drinks i think it only came to less than £25 a head. It was a wicked place, 50's inspired with a cool diner and the waitresses dress in 50's style outfits, great fun!! - good for photo opportunies with your mates....and set the challenge of who can wear the funkiest socks!!
Why not have your friends round for a clothes swapping party. Get them to bring all their items that they don't wear and have fun trying on all the different things. This way, everyone also gets a present.
You could also pick a cocktail to drink and ask your friends to get the ingredients as part of your gift.