-Certified hairdresser. Learned it after the whole Goku Black arc. Because it's amazing how much getting a decent haircut can mean to people when the world is going to shit/ending around them. Meant to learn it before then, but didn't have time.
-Knitting, sewing, and crochet. Seamstering. He's still learning tailoring.
Because knowing how to make and maintain your own clothes is a good survival skill. That and it's something for him to do when he's bored but wants something low energy to do. He'll knit or crochet instead of playing games on his phone or something.
-Can play the violin, and rather well, when he's had the time + energy to keep up with practicing it. He's not an expert or anything, but he can play well enough that the strings don't squeak off-key every time he plays them. Not past the basic warm up stage, anyway.
-Can sing marginally well, too. He'll mess around and have fun with Cas (drums) and Gohan (who can play piano in my canon), if they've got the time for it.
-Is a bit better with kids than in canon- or at least with babies. Babies are easier to deal with. He's good at feeding them and keeping them clean and making sure they don't stick anything funny up their noses. He's better with babies than with kids that are like 6 years old and up. Then he just gets kinda awkward and doesn't really know what to say. He's better if they're family.
Kinda bad at dealing with teenagers. He does try, he really does! And he remembers vaguely what it was like to be a teenager a lot better than he remembers what it was like to like, 6 and up, but his own childhood was so post-apocalyptic/weird that he tends to find himself at a loss for how to really relate to them or what to say.
-Good at giving basic first aid. He's no doctor, and he's better at healing than he is with actual medicine, but he manages. He's still learning, tho it's mostly just through books.
-Still learning things like medicinal herbs and gardening. Camping/wilderness skills, all that. He's had plenty of previous practice at starting fires, but that was mostly in crumbling cities or underground.