You won't win any nutrition awards with cupcakes made from only cake mix and diet soda, but if you're looking to cut fat and calories, it'll definitely do the trick. We don't know who dreamed up this strange concoction, but it really works. Combine one box of any flavor cake mix with a 12-ounce can of diet soda and voilà -- totally easy, low-cal cupcakes. A particularly yummy combo is diet cream soda and orange cake mix, but there endless flavor possibilities. And for the Weight Watchers participants out there, these cupcakes will cost you only one point!