I would try a little project I have wondered about for years. Of course I was thinking of dollars on the Bill Gates level.

I would do a bit of research, find and buy some arable land. Several hundred acres with water and wetlands.
I would go body hunting amongst the homeless and make offers.
You move to my piece of ground, bring your kids and family. There will be materials there to build a home. You will make a committment to live there and farm the land. You and the others, will share the infrastructure that supports your community. By share I mean man and support.
You will abstain from drugs other than a bit of cannabis now and then. The same applies to alcohol.
You will send your children to the existing community schools.
You will, when the place produces it, pay your selves a wage.
Any excesses of funds will be put back into the project.
I will, early on supply funds as necessary to get the place viable. Then you residents make the place self sustaining.
It will require a lot of work. No one will starve or go without clothing, housing or medical attention.
If you don't wanna work don't waste my time.

Probably never fly. Too many entitlement entities. Obviously much has been left unsaid. As much funding is unavailable.

Still it would be a worthy endeavor. Many are said to be trapped in the street people category. A chance to elevate themselves would seem a blessing.