You speak and write well, so do you have any kind of creative leaning? My first thought here would be something like serving as a tutor for young students. Overall, however, the idea is to keep looking around wherever to see what opportunity or opportunities might appear or where one thing or another might catch your interest. For example: Just a few days ago I was sitting here in my usual depression as a disabled old-timer living 900 miles away from my two daughters and six grandchildren, then a search for "loner forum" landed me here where I now have something to do.