Don't know how T I am but things I remember clearly that defined my childhood:
1. Reading anything and everything within sight. My parents would have to work hard at putting things away that they did not want me to read or see (movies). If I was curious, I would find it anyway. Could be happily left to my own devices for hours with a good book. This included books on diamonds, backpacking in Europe in the 80s, farming, the publishing industry...everything was fascinating until I understood basically how t worked.
2. I could also be left alone with an appliance and its manual. I don't like paying attention to details too much so once I figured out how something worked, I just played around with it. I wasn't into destroying but I really, really enjoyed fixing things. Now, thinking back, even in my early teens, I was the default fixer of appliances around the house.
3. I spent hours on my parents' balcony dreaming of far away places, planning elaborately how I would run away and join the circus (damn you Enid Blyton). This all changed when I began to read about the cruelty circus animals endure. Much of the planning consisted of thinking up elaborate survival scenarios (not in the wild but in the city).
4. Only being really sad when I was really bored and complaining incessantly when I was bored. It didn't happen a lot but I remember when it did because it felt so horrible.
5. Realizing that I could steal a small enough amount of money from my father's wallet every day and he would never know. I didn't need to do this. I was rarely ever denied anything and always got extra money when it was justified. Yet, I did it just because I could for several years until my moral compass became a little more defined.
6. Social manipulation in all its forms -- primarily consisted of convincing people that they should do things that were good for them but also incredibly beneficial for me. Was quite successful at this.
7. Never believed what adults told me just because they were adults. I always questioned and always had an opinion about most things.
8. Rebelled at any sign of control.