I've always slept with something over my head for as long as I can remember because I hate people looking at me when I'm sleeping, even if I'm alone in my room.
I make lists and clean things when I'm stressed to organise myself and figure out what to do.
I have a pretty good memory for unimportant things like the whole periodic table, world countries, the first 50 digits of pi, rubrics cubes and random facts like the only word in the english language that has 3 consecutive double letters is bookkeeper.
I research things on my own a lot and learn a lot about them, like black holes, the science behind why we're warm-blooded, how lightning works, how colour works, etc.