So spouse has the GI Bill, which either of us can use. I've decided I would never use that masters in Library and Info Sciences that I'm about 1/3 done with, and he has no desire for another degree.
But in addition to paying for school or training, the GI Bill pays a housing allowance while you are receiving that training. This starts at about $1200 *per month* for online training and may be much more, depending on the zip code, for in-person courses. So it seems silly not to use it.
I think we've used about 12 months (of 36) for my 1/3 masters degree and a work certification DH did before he retired since he thought it would help with his job search.
It does need to be a qualifying program, which is a bit vague, but you can't pay for golf lessons, for example, but could pay for lessons to get a scuba dive master certification. (Actually, if you could find a formal program that taught you how to be a golf instructor, or maybe a golf "ref" or even a caddy, that might qualify.) I chatted with someone who used it to learn how to be a fly fishing instructor, which was basically getting paid to fish for a few hours a day for a week. Plenty of people use it for flying lessons.
Dh and I have been brainstorming fun or interesting or useful things. I considered dog grooming so I could better groom my own dogs and then donate a few grooms per month to a rescue group. (It seems most groomers learn on the job so finding a formal training program was rough.) We talked about cooking school for one or both of us since we are both uncomfortable, nervous cooks. (Haven't ruled this out, but it seems most programs start at what would be Cooking 200, and we'd need the Remedial Cooking version, like "hey, this orange stick thing is a carrot. Say it with me, 'CARE-ot'. ") Or massage school so we could just give each other killer back rubs and work out some of the kinks and creeks that come with old age.
I love the idea of a charitable component, like dog grooming for rescues or using my newfound cooking competence to do meal prep for a few seniors or housebound people. But it's not strictly necessary.
Also, many of these have potential barista FIRE, back up income type implications, like having a few massage clients each month or grooming a few dogs for pay. That's nice to have as another layer in a back-up plan (though both of those examples are somewhat physically taxing and probably not what I'd want to take on in later years.) . It's bonus points, but not necessary.
What would you do? Any creative ideas to suggest?