GTG Ideas

I need some help. One of my good friends is getting married in September and is bummed out because she can't afford a real bachelorette party (they were going to have a joint party in Atlantic City). I was thinking of having her, her fiance and some of our mutual friends over or just make it a girls night, Does anyone have any good party ideas? Also, everyone would be bringing something (either food or drink). Thanks in advance for any suggestions.