We love this idea from the amazing Martha Stewart. It would be the perfect addition to any Halloween party.
From Martha Stewart Living: Just choose a large, wide pumpkin, cut off the top third with a serrated knife or keyhole saw, and scrape out the pulp and seeds. Line the gourd with a glass or plastic bowl to prevent it from becoming water-logged. If the pumpkin opening is a bit too small for the bowl, carefully shave the inside edge with a spoon. Finish by filling the bowl with ice and bottled drinks.
Image found here.