Richard Little, of Save the Jurassic Armored Mud Balls, displays a case of rocks and minerals at Greenfield Community College’s Involvement Expo Wednesday evening. The event was designed to showcase opportunities for residents to join social and civic associations, nonprofits, sports and hobby clubs, mutual aid and other community-building groups. STAFF PHOTO/ANTHONY CAMMALLERI

Abbe Bresciano of Big Brothers Big Sisters of Western Massachusetts talks with Greenfield Police Officer Zoe Smith at Greenfield Community College’s Involvement Expo Wednesday evening. The event was designed to showcase opportunities for residents to join social and civic associations, nonprofits, sports and hobby clubs, mutual aid and other community-building groups. STAFF PHOTO/ANTHONY CAMMALLERI