I also admire the imagination it takes to conceive many marine accessories. While some are the proverbial solutions to problems nobody was seeking, many others prove out as innovative problem solvers as long as you consider them in the right context. They probably wont sell too many new-tech marine air-conditioners to boaters in coastal Maine, or portable desalination units those who ply the waters of Lake Mead, but the Dometic Refrigerated Cup Cooler, for example, has promise. Boaters at every latitude enjoy a cold drink from time to time. The problem is ice: it's heavy, takes up space, and even with a great cooler, it doesn't last forever. Moreover, even if you start out with an ice-crackling cold can of thirst-quenching goodness, your beverage warms as it sits in the drink holder. So why not have a cup holder that chills your drink using a thermo-electric process? Almost all boats have DC voltage aboard.