It would be cool to see makerspaces or something similar on bases. I recall there were mechanic shops (I could be misremembering) where you could bring your car to work on it and borrow tools. With tools now you could create some hiking clubs and stuff too.

Doing this stuff isn't easy though and I know when I was finished with duty and finished working out for the second time that day I really didn't have energy to do much except play video games and knock back a few beers. Creating new programs, clubs, initiatives are hard. And in the military often times you have turnover on the bases so it's hard to maintain continuity even when someone creates something. If it were up to me I'd have a cadre of 3-10 individuals who ran, funded, maintained clubs and programs for soldiers. I'll not be surprised if I find out that this already exists either lol.