Something you’re just good at with minimal effort and/or you learned much more quickly than average.
For me, it’s paper snowflakes. My brain just seems to effortlessly figure out what cuts to make to the paper wedge to make it turn out exactly how I want it. Largely useless, but good fun and was a much-needed ego boost when I was a kid :]
Out of interest, do you have a vague ability to tell orientation (magnetic north) with your eyes closed? Research is showing some people have magnetoreception and that it may have been more common in our human ancestors but lost to many over time.
It could explain why you’re so good at telling distance and time.
https://www.nature.com/articles/s41598-022-12460-6
Here’s a pretty recent paper on this. I only skimmed it but boy does this seem wacky. It is in Nature, though, so I guess it’s at least somewhat serious…?