Why, I do believe I have already made the acquaintance of the Invisible Refrigerator; just earlier this week, as a matter of fact. Perhaps not this fashionably flower-powered, built-in model from 1967, but its 2011 conceptual counterpart: Once again owing to Hurricane Irene, we've made do without refrigeration for almost a week. During this time, I have developed a new respect—a yearning, even—for the wooden cabinet that was cooled by blocks of ice.