I know, I know this one is a bit goofy, but at least it is a gadget. The cow wash gadget is real and was created by Swedish design firm DeLaval. So far they have sold over 30,000 of the cow washers. The Cow Wash system not only cleans the cow but also boosts milk production due to improved circulation, stops spreading of diseases, and makes for happier cows. Watch the cow wash video after the break.