Urban exploring (for lack of a better term) with no purpose other than to discover. I live in a city and I'm constantly just wandering around going down streets I've never been down or into alleys I've never been in or checking out stores I've never been to. This is my approach when I travel to other cities and other countries too, I often don't have a plan for my trip/vacation, I just arrive there and then start to wander and see what I find.
My favorites (right now) are learning to play star wars legion better, getting back into gunpla, finding mobile games that aren't utter garbage, trying and failing to find decent friends, and sorrowfully watching hasbro destroy magic the gathering.
Yeah I stopped playing about 2 years ago just because of product fatigue. And the new LOTR stuff costing twice as much as a regular set? No thank you. They have also leaned heavily into turning MTG into a weird "investment vehicle" with all these ultra-collectible and exclusive cards, the most egregious of which is the "one of one ring." It's pretty gross. It's much less about the actual game now, which I'm sure would (does?) disappoint Dr. Garfield as he only wanted to make a game. He expected people to play magic at the kitchen table and wrap a rubber band around their deck when done.
It’s rock climbing but more specifically the type with no ropes or harness. Just the body and your chalk. The height ain’t high of course and there’s safety mats. Fun to solve those short problems.
I'd go with 3d printing before welding. You can so quite a bit with a 3d printer and the CAD skill you gain are quite useful. I printed most of the parts for my 3lb robot and it heald up quite well.
I like sewing - I make a few pieces of clothing once in a while but usually I'm just mending things or adjusting the fit of store-bought clothes so that they look better on me.
I also love gardening - growing vegetables outside and mushrooms inside. I'm pretty new to both but the mushrooms in particular are really fun - many of them grow a lot faster than vegetables, so it's exciting to have a faster feedback loop and try little experiments to find what works.
I think starting with alterations to clothes I bought at thrift stores or sales helped me a lot - I did a lot of that before I ever tried making something from a pattern. Even making a simple garment from scratch can feel like a big project, but if you're just taking in the sides of a shirt (for example), it's easier to get it done and feel good (even though picking out the seams first is so annoying)