The father of one of my professors in college moved to a university town in his 70’s and audited classes full time. Always thought that was a good idea, I used to sit in on random lectures when I was at university and enjoyed it. I like the idea of trade school like miss stash is doing. Not sure I could do the work of a degree program though.
It would be cool to get certified in a bunch of random stuff too. Personal trainer, sky diving, pilot license, scuba, sailing, ski instructor, yoga, some martial art, commercial trucking, pest control, real estate agent, etc. Why? Because you have time and money so why not?