My two are:
Making sourdough. I personally always heard like this weird almost mysticism around making it. But I bought a $7 starter from a bakery store, and using just stuff in my kitchen and cheap bread flour I’ve been eating fresh sourdough every day and been super happy with it. Some loafs aren’t super consistent because I don’t have like temperature controlled box or anything. But they’ve all been tasty.
Drawing. I’m by no means an artist, but I always felt like people who were good at drawing were like on a different level. But I buckled down and every day for a month I tried drawing my favorite anime character following an online guide. So just 30 minutes every day. The first one was so bad I almost gave up, but I was in love with the last one and made me realize that like… yeah it really is just practice. Years and years of it to be good at drawing things consistently, quickly, and a variety of things. But I had fun and got something I enjoyed much faster than I expected. So if you want to learn to draw, I would recommend just trying to draw something you really like following a guide and just try it once a day until you are happy with the result.
Ham radio. The license is now just a multiple choice quiz–no morse code needed. There are apps that go through the questions in a flashcard style, and if you go through that for 30 minutes a day for a month, you’ll pass no problem.
Entry level radios have gotten cheap, too. $25 Bafangs are the butt of jokes around ham radio, and yet everyone seems to have at least one. The older models had harmonic transmission issues that violated FCC requirements, but there’s newer ones that clean it up and cost about the same.