I grabbed an old, used sewing machine in grad school to repair some things. Sewing is one of the simplest "practical" skills, I'd encourage more people to learn the basics. I have taught a bunch of people in about a day, at least enough to make very simple garments and patch more complicated ones.

The real downside of it, now that I'm older, is that it's very time consuming, especially for larger projects. Sinking a couple hours into getting set up, measuring, cutting, sewing, etc is just hard to fit in. Clicking a couple buttons on Amazon and getting it off my to do list is often a lore more important.