Put Leftover Wine to Good Use
Instead of pouring leftover wine down the drain, save it for future use by freezing. Freeze wine in an ice cube tray (each well of a standard ice cube tray holds two tablespoons), transferring the frozen cubes to a resealable freezer bag.
It's important to note two things. One, don't wait until wine is past its prime to freeze. Two, while drinking thawed frozen wine certainly won't do you harm, flavor-wise, it's only suitable for cooking.