Lame-o needs help looking hip at a party

JayeWo

So our neighbors are these super-trendy gay guys who invited us to a Christmas party (actually the invitation said it was a "Britmas" party and had a picture of Britney Spears, haha).  Anyhoo, the invitation said "gifts not necessary, please bring a beverage of your choice" and I want to bring something non-alcoholic that I can drink, but my only idea so far is a bottle of Welch's Sparkling Grape Juice, and that seems just a tad lame.  Ideas, I need ideas please!!