Retired engineer, former sailor, living off grid in Puerto Rico. Volunteer for climate change mitigation efforts.
https://duckduckgo.com/?t=ffab&q=binding+knots&iax=images&ia=images there are so many wonderful choices! The simpler looking ones are usually the best. :) But they are hard to describe with text . . .
tying knots. All you need is a couple of pieces of string to get started. The right knot, well tied, is like a good friend - you can count on it. Shipyard workers sometimes make fun of how inexperienced mariners tie up their boats to a dock with “if you can’t tie a knot, tie a lot!?” (full disclosure, I am a sailor).
someone else mentioned sign language - that is also extremely useful sometimes! My wife and I learned it when we learned to SCUBA. We do not have any deaf friends, but sometimes you meet a person who is reliant on sign, and if you can at least spell out some words, ‘they are so grateful’.
Ubuntu 22.04 LTS - it works perfectly all the time now. I have no idea at this point why anyone would continue to use Windows, tbh. A couple of years ago, audio management and networking were still a little bit fiddly, but I have not typed SUDO in almost two years now. I game with Steam, and Proton works with pretty many titles, but not all; I guess I am not that heavy a gamer - having a hard time getting past Kerbal Space Program 1.0 with its endless variety of fanbase mods and CKAN for mixing and matching them.