Best way to set up a "donation address"?

[wiredless1]

I see them. You see them. Addresses on pages or sites that have "tip jars".  

My gig:  I want to direct crypto to non-profits: a clearinghouse address list, if I can. I have reserved several domains but I need to establish a relatively simple way that allows anyone to contribute to xyz organization. A public service sort of thing (creating a use-case model for XRP cross-border, inter-agency contribution coordination).

Advice or reference points?
Thnx in advance.
...and I'll be global...the world thanks you, too.