I’ve had some contact with the Detroit chapter of the Ignatian Volunteer Corps. I thought I might do some volunteer work when I had some free time, so I paid a visit. Most members are retired from professional jobs. They devote at least two days a week to their projects, which are quite demanding. They also meet regularly for spiritual formation and support. I’ll visit the IVC folks again when I have more time to volunteer.
The IVC has chapters throughout the U.S. I don’t think their work is widely known, so browse their website. Here is a recent article about their work in Boston. If you know a retired person looking for a challenge, pass the word along.