Exactly. It's an extension of the "pay yourself first" principle (which I also do).

> I wonder how do you usually find out about your local, overlooked but impactful organizations?

These days, I'm active in my local community in various ways, so I'm pretty aware of the various organizations in it by default. That also helps me to choose: I have a good idea of which ones are good and which ones are dubious.

When I started, though, I chose organizations that had helped myself or people that I know in the past. That gave me the confidence to get going, and things evolved from there.