STAMFORD – A Stamford elementary school held its graduation today, but one student is still working hard to help children battling cancer. Two months ago, Grace Targonski, a fifth-grader from Davenport Ridge Elementary School, proposed working with a charity to help sick children across the country. She joined Ellie’s Hats, a nonprofit organization that delivers donated hats to children’s hospitals around the country. Grace says her inspiration came after her aunt was diagnosed with breast cancer one year ago. She soon realized how sad it must be for a child that is battling the deadly disease. She says that in one week, the school has already collected 50 hats.