This classy, BPA-free, wine-saving system is the thrifty wine-drinker’s dream come true. Here’s how it works: Open a bottle of wine and pour yourself a glass. Then empty the rest of the bottle into the Savino carafe. Insert the float and let it rest on the surface of the wine—this creates a barrier between the wine and the oxygen and slows oxidation. Cover with the lid to protect against spills. Keep the wine up to a week in the fridge. Remove lid, pour yourself another glass, and enjoy.