When my son was born I had 3 girls. For the first 6 months I didn't care to buy boys toys since he wouldn't know the difference I thought.

Wrong. At six months he picked out the single car in between the dolls, toy food etc, turned it around, started moving the wheels and making noises.

My daughter did the same when she was near car. And no one even role modeled that in front of her as they tend to do with boys. (People tended not to want to play with car with her even if she took that to them. It seemed like people feel bad/confused about playing with gender inappropriate toy. ).

Older then six months, six months old are not bringing toys to people due to lack of ability to crawl effectively.

I also remember what 6 months old are like. If their actions are proof of universal anything to you, then it is your own bias. They don't play pretend knowingly yet, they only mimic a bit. Nor are cosistent.

But interesting is that whenever child or me does or wish something gender noncomforming, like almost always, someone feels the need to explain that someone else is gender conforming.

I still love remote control cars to this day. I was so excited when I pulled apart my first motor. I had no idea how magnetism or any of it worked. I just knew, you connect the wires and it spins. So much fun from a simple motor.