Borrow a dip-dye technique from the art world, and let kids unleash their creativity on some mini-doughnuts.Just microwave some frosting until it's soft, and then add drops of food coloring, but don't stir it.Then it's time to dip and drizzle some mini-doughnuts to your hearts delight.You can sprinkle the frosted doughnut masterpieces with sparkling sugar and luster dust.Try pink for Valentine's, shades of green for St. Patrick's Day, or full-on rainbow