Hmmm.... maybe if there is something he is passionate about he could find a part time job doing that.

I know a couple who are retired but still want to be part of something. So they work at the local sporting arena. They do things like taking tickets, sweeping, not the concessions but just the easy jobs that don't take much effort. When concerts come through town, they get to work at all the concerts so technically they get paid to go to concerts.