While you’ll find Scott Calkin, 66, making a dramatic entrance at Nantucket’s annual Christmas Stroll via Coast Guard vessel instead of a sleigh, he also volunteers for HopeHealth’s Hospice programs in Cape Cod, sits with Alzheimer’s patients, and makes house calls for terminally ill pediatric patients. He gives out fleece scarves with mittens on either end called “Santa’s Hugs” so that the “children can give themselves a hug when they need one.”