If I had money, I'd start to set up free after-school tutoring/play areas.
I'd love to open a new business of a dog park that sells coffee in the morning, and beer in the afternoon/evening. A small amount of nice workstations for people to get some work/studying done.
If I never got into tech- well I was going to be a Materials Engineer, but if I were a tradesman I'd probably be an electrician because of my superiority complex, lack of craftsman-level hand-eye coordination, and I like expensive tools.
True, I think these things are hard because they don't scale easy. You really need some passionate "boots on the ground" for it to work, you can't just send money over and have it work out most of the time. Finding the people who could run it well, and convincing them to do it is the hard part. These types of people are usually also not the best when "bad" people come around to bend the purpose to their desires.
It is my dream to do some of it in the developing world too, if I were to visit someplace often to help out more. A church I used to attend was big on surfing and would take trips to a small town in Mexico. They build an orphanage, some living spaces for single mothers, drastically improved some schools amongst other things and I think that was an awesome way to do charity. There were a couple run-ins with smalltime cartel-ish activity (as they saw it as a power grab) but because everything was from church to church, most donations came in the form of infrastructure and supplies (no money to take), and the pastor was a bit crazy (he visits prisons often and can deal with the thug mindset) they allowed it continue.
