Freeze your vodka in a cranberry-laced block of ice. Takes just five minutes, plus freezing time. Save and clean a square milk or orange-juice carton, and cut the top off. Put your favorite bottle of vodka inside. Add fresh cranberries and fill halfway with water. Freeze for at least four hours. When you're ready to serve, just peel off the milk carton and set your icy drink on a tray to catch the drips.