Ideas For A Bachelorette Party

I am the maid of honor for my best friend's wedding...and although the wedding is not for a little over 4 months obviously I've been thinking about what to do for the bachelorette party. Here's the thing... One of the bridesmaids is under age... So obviously no bars or anything of the sort can be included. Any ideas of what to do so fun can be had by all... And yet a memorable night for the bride to be? Any ideas would be helpful.