The Trend Report: The Fizz Buzz

The chicest—and most environmentally friendly—water comes straight from the tap. Perfectly fine if you like your H₂O flat, but what about those who prefer it bubbly? Enter a new generation of soda-fountain-style siphon bottles that use cylinders of carbon dioxide to add a little sparkle in your glass. The Penguin from Soda-Club ($300; sodaclubusa.com) takes the form of the aquatic Antarctic bird.