I do have a Patreon, but I guess people aren't finding it and/or have ad-blindness to the words 'donate' and 'patreon' ;P
A book, software, something. I can't quite expense patreon and others may have a similar issue. (Useful "free SaaS" where all there is is the cup of coffee button makes me sad).
My buyer won't even blink if I say that I need a $150 tool: I can just bill it to whatever project it's being used for as long as I get an invoice or a receipt or some kind of documentation. If I say that I found a free tool and I'd like to donate $10 to the author, no one will know how to do that.
https://www.marginalia.nu/marginalia-search/supporting/patre...
https://www.marginalia.nu/marginalia-search/supporting/buyme...
(the text of the links is correct though)