The Finder trick and Replacicon have been around for a while, but in macOS Sonoma, similarly to what was already possible with Shortcuts, we now have the option to pick any image file as a custom icon ...
Are you still basking in the glow of the Mac’s 40th anniversary and longing for a little more nostalgia? Well, I’ve got it for you with Michael Flarup’s latest book of iconography, The macOS App Icon ...