For the seventh year in a row, Holiday With a Hero is seeking donations to bring its coffers up from nil to $30,000, so 300 homeless Carson City students can have $100 to spend on presents to sit beneath their Christmas trees this year.The children, who range in age from elementary to high school age students, often buy necessities for their family members and not items for themselves, Carson City Sheriff’s Sgt. Daniel Gonzalez said.“They don’t usually buy stuff for themselves,” he said. “It opens a dialogue with the kids.”Shopping occurs Dec. 13 and 14. Children are taken to shop …