They do everything I do. More or less well. Incompetence is not rewarded. You do more of it until you do it right. (Looking at you DSS - you will be hanging out the washing for a long time to come.)
So the 4 of them cook, clean, wash up, do laundry etc etc etc. I am not the maid. And when they leave home they will have the necessary soft & hard skills to be self reliant.
When I do stuff on the farm they also learn the new skill. They've not lambed single handed but they will. But they can fence, hang gates, shovel shit, pile hay/straw, feed and care for livestock, ride to at least a trot, use a drill, hammer, make ikea furniture and offer moral support - which is a key skill.
It all sounds a bit grim but I leave them in peace 95% of the time. We work as a team as much as possible and do it all as quick as possible.
If they want extra pocket money they can help out with farm chores over the holidays.
That said, they hate moving the sheep because my DH gets all shouty.
Sewing is a bit of an exception. I'm not good enough with the machine to "teach" anyone. I can thread it and just about do hems. But if they leave me to do it alone I won't do it.