A company founded on worm excrement is turning trash into cash for St. Matthew's Lutheran School. Empty juice pouches, potato chip bags, Snicker's candy bar wrappers all are worth two cents or more to Kay Abts' students and St. Matthew's School.  Abts and the students in her seventh- and eighth-grade class have partnered with TerraCycle, a New Jersey-based firm that purchases the discarded wrappings. The erstwhile garbage will reappear on retailers' shelves as backpacks, pencil cases, totebags and other "upcycled consumer items."