Muriel Craig didn’t set out to be a regular volunteer for AARP. After retiring, she threw herself into yoga, writing workshops, book clubs and even cake decorating, looking for ways to repurpose her life. “But nothing was anything I wanted to do consistently,” says Craig. By chance, a few years ago, Craig, who is in her mid-70s, attended a lecture organized by AARP volunteers at her local Cleveland Heights, Ohio, community center. She walked away impressed.