Any early experiences that, in retrospect, hint at your kinks?
I wouldn't say they hint at it so much as yell it from the rooftops! I had lots of Barbies and they were all sex slaves to Aladdin (the one Ken doll I had), several of them remained naked at all times, there was lots of orgies, lesbian sex and "rape." On several occasions Jasmine disobeyed and was beaten, tied up naked, gang raped and generally punished.
When I got a baby born for Christmas one year rather than using the accessories for the doll I used them for me, I kept a potty in my bedroom and imagined groups of men watching me pee in it, I used the bottle to give myself mini enemas (though I didn't know that's what they were).
In primary school I had a friend who, in hindsight, was my Domme. We spent lots of time together playing sexually. One time I remember vividly I was naked and lying down on my bedroom floor and she wrote on me in lipstick (I don't recall what) and inserted pencils, pens and various other objects into me.
Another time we were at her house playing and her little brother came in and she shut me in her wardrobe, totally naked.
I've already written about one of my fantasies during childhood, that was every time I had a shower. I had others which I will write about in the future.
So yea, I was way past hinting!