[sidlls]

I'd invest in equities, commercial real estate, and residential real estate development.

Most tech companies looking for angel investment or VC money are just other versions of information selling (that is, information about people) or social interaction or both. They aren't worth "giving back" to, from either a tech perspective (from the perspective that they'll possibly advance technology) or from an investment perspective (they'll almost certainly perform worse than even conservative investment).