A few relatively unusual things that come to mind:

People often make claims that even atheists have "God-shaped holes" that they need to fill. I have never felt this way, and I have no visceral understanding of what others mean when they say that they do feel such a thing. This also applies to related concepts, e.g. a search for "universal meaning," a religion-inspiring feeling that "there must be something greater out there," etc.

I'm somewhere in the middle of the introversion-extroversion scale. I enjoy socializing, but I still need time to myself in order to recharge mentally. Extroverts tend to see me as "one of them" at first, and then they become confused when I don't always want to go out and party.

I never went through the (seemingly typical) stage in childhood where one has a general dislike of/aversion to the other gender. I was friends with both boys and girls, more or less equally, since preschool if not earlier. (I myself am a straight male, to contextualize this for those curious.)

There was an interesting survey several years ago on Cosmic Variance about our mental images of time. I'll quote my response:

My main physical conceptions of time are in terms of years or weeks. Both involve spirals, although oriented differently.

For years, I think of them as a clockwise spiral going upwards, such that any two years make a complete circle when seen from “above.” For example, if I picture this year and then next year, it’s a circle where the bottom is January 2009, the left middle is Summer 2009, the top is Winter 2009-2010, the right middle is Summer 2010, etc. There’s definite seasonal imagery connected to this view. To try to demonstrate this, a diagram is -(:)-, where the -’s are summers and the .’s are winters. I often picture myself as being “on” a certain part of the spiral/circle, e.g. right now I’m coming up to the “top” of the 2009-2010 circle.

For weeks, I think of them as a spiral going to the right, so that if you look at it from the side, “days” are in the front and “nights” are in the back. I picture a week like this: |S|M|T|W|R|F|S| (often without the days labeled, but I put that there for clarity), where each day goes off to night and then loops around behind to connect to the next day in the morning.

I imagine any other timescale as just a long line going left to right.

There seems to be quite a range of mental images of time among people.