James Dyson, the man who single-handedly transformed the vacuum cleaner from a symbol of domestic oppression to an object of techno-lust, is back on the scene with not one, but a whole coterie of kitchen appliances designed to save space -- by sticking 'em in a box. No longer must Americans stand for tea kettles shaped like tea kettles, toasters shaped like toasters, or for juicers you get the idea. What's more, these guys are all designed to work together: controls are uniformly placed on the top or front panels, with devices sharing common power supplies. As it stands, this is all currently little more than a story dreamt up on the basi