I think I learned the different types of clouds when I was four, and then again in elementary school, and then again in high school. I have Never actually needed this information. What thing was repeatedly impressed on you as being important that has no practical application in your life?
Everyone has something that they love that most people are not culturally attuned to. Be it a band you like, a type of fruit or vegetable, or a slightly dangerous hobby. Convince someone to try this thing you enjoy. Don't mess with them, make it something you genuinely appreciate, and want someone to share in the experience.
What's the first thing you do when you move into a space that's going to be Yours for a while. Not a hotel room that other people clean, or an office you have to share with a billion other people. When you have your own room / apartment / house, what do you do to make that space Yours?
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