DIY signature cocktails. Obviously lemonade wouldn't make sense for Prohibition, but it's a cute setup. You could always do different punches. Plus, mixed drinks can be cheaper because you can use really low-end alcohol and nobody can tell the difference.
At my cousins wedding for booze, she had a couple cases of wine, two legs donated by a friend and one mixed cocktail served this way. Plus a few sodas. People just served themselves. But if you have 100 people or more, there might be too big of a line.
odax is Tropical Chic. This traditional beverage server is the perfect outdoor entertaining accessory with its summer fresh appeal. Assure that chilled water is always on standby with this wicker pedestal drink dispenser. $149.99
Make Your Own Bubbly: This prosecco bar isn't just delicious, it also adds pops of bright color to any engagement party or country wedding reception. This country-themed event used canning jars to hold fruit, but you can find decorations to fit any style decor. Use hobnail milk glass dishes for a vintage theme or wicker containers for a retro version.
Wheelbarrow drink container (JoyandDelight.com): Make a wheelbarrow into a beverage holder; set drinks on top of ice; fun for a farm / barnyard party, garden birthday theme, John Deere theme, and more!