The Play Board of Shirley, a group of residents serious about maintaining the community’s youthful spirit, is hosting its seventh annual Day of Play from 11 a.m. to 5 p.m. Saturday at Ayer Shirley Regional Middle School. The event will feature games, physical fitness demonstrations, classes, gymnastics, an obstacle course, a bounce house, dancing, Pilates, karate, soccer, and arts and crafts. A magician will also perform at 4 p.m. Most of the day’s activities are free. For more information, visit the group’s website, www.playfulshirleyma.org.