Susan Kare also did the early Windows icons, all the way up through at least Windows 3.1.
Try as I might, I have not been able to find a good Freedesktop-compliant icon theme that looks like her work. I would love to have something like that. I’d even be willing to commission one for some small amount of money…we should get a kickstarter going or something.
(My artistic ability is 100% nonexistent, so it’s not something I could simply do myself.)
Related: I was thinking about playing some meat-space solitaire recently, and I remembered that I had a pack of these lying about I’d bought ages ago: https://www.areaware.com/products/solitaire-cards?variant=14622412804 I really like them, although the pixellated corners feel terribly odd in your hands.