Who says 'girl-drink' is a dirty word? Take the Frangelico-and-fresh lime idea and make a longer drink perfect for picnicking. Supercharge it with vodka or white rum, or substitute soda in place of lemonade for something drier.
Note Large ice cubes are great in punches and melt more slowly than smaller cubes. If you're not in the market for specialty ice moulds, just fill the bottoms of some clean milk or juice cartons with water and freeze.