There's also novelties like https://www.howmanypeopleareinspacerightnow.com/, this probably hasn't been updated in a decade but that makes it no less interesting.
Then there's exceptionally cool demos like https://thelongestyard.link/q3a-demo/. This sort of thing just doesn't fit in a "blog" format unless you're writing a blog about how you built it and linking out to it.
If anyone knows of a directory of sites like these (preferably with a shuffle option) I'd love to hear about it (and contribute)!