I have always thought it would be cool to have something like this. "Ultrasonic" cutting is done in industrial production of food products and it is pretty damn impressive. Archive: https://archive.today/TSD3R From the post: >>Cutting onions and tomatoes is about to get a high-tech upgrade. Seattle Ultrasonics today unveiled the C-200 that they're calling the world's first ultrasonic chef's knife for home cooks. The $399 knife harnesses ultrasonic technology used in industrial settings, vibrating more than 40,000 times per second to "reduce friction and the force needed to make cuts by 50%."