Friday morning’s 129th annual Donation Day will continue to show the Grass Valley community’s value of giving, regardless of the weather. “What we’re trying to do is teach children about giving, thinking about others and what other people might need,” said Robyn Ettl, nurse for the Grass Valley School District. The event begins in the multipurpose room at Grass Valley Charter School, 225 S. Auburn St., Grass Valley, the former Hennessy Elementary School campus. Food boxes will be set up at 8 a.m. in the multipurpose room and the parade, weather permitting, will begin at 10 a.m. One-hundred-fifty families receive …