I’m always looking for things to add to my RSS reader! I loved the Hundred Rabbits site that was posted here recently and thought others might have some nice submissions.
I recently found Sunshine and Seedlings which is substack, alas, but has some great content.
I’m also a fan of Low-tech Magazine.
My own https://alxd.org/ has Atom / RSS - https://alxd.org/feeds/all.atom.xml
I have a lot of essays on the real projects, fiction, game design, language and more!