Change a car tyre. I once got a complete puncture with my then very young children in the car in the pouring rain. I changed to the spare and drove to the garage dripping wet through. The mechanic asked who had changed it for me. I almost launched him.
When I passed my test at 17 my dad would not let me drive my car until I could change the tyre, check the pressure, refill the wiper fluid and check the oil.
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I can do those. And I have insisted all 3 of my boys can also do them all. They drove an old banger so still need those skills.
I'm prone to overtightening the nuts though! I'm not sure jumping on the brace is in the handbook!