Healthy snacks for children from companies including Annie's Homegrown, GoGo squeeZ and Stonyfield Farm are selling well, as kids snack more often and parents become interested in making sure snacks are nutritious. "It's clear that there is a major opportunity for retailers already producing low sugar/fat/calorie items to branch off into a healthy kids offering," writes Matt Devine, chief marketing officer of Decas Cranberry Products.