https://solar.lowtechmagazine.com/ -- An assortment of low/high tech cool things, with a bent towards environmental preservation.
https://100r.co/site/home.html -- A blog by indie software developers who live on a boat.
https://hackaday.com/ -- Self describes as "Fresh hacks every day". It's an accurate description.
https://drewdevault.com/ -- A blog about FL/OSS software and technology.
Edit: See 4ad's comment here: https://news.ycombinator.com/item?id=24539935
> In the interest of discussion and discoverability, I urge the commenters in this blog to write a synopsis to each blog instead of just dumping a list of blogs. Or worse, a list of XML feeds (!).
It appears to be up now though.