/r/oddlysatisfying: Oddly Satisfying - For those little things that are inexplicably satisfying. - August 13, 2021 - 06:25
/r/ManufacturingPorn: Manufacturing Porn - How Things Are Manufactured - Everything related that serves your obsession for manufacturing and industrial process. Inspired by Discovery Network's "How It's Made". - March 24, 2020 - 19:19
/r/Damnthatsinteresting: Damn, that's interesting! - The most interesting place on reddit - March 23, 2020 - 18:28