I don't know, but my recommendation is to buy Lego and technical lego (cogs, motors, chains etc).
I spend YUGE amount of my childhood engineering walking machines, cartoon projectors and mechanical computer games and it was a LOT of fun and great for my mind.
Stefan molyneux has a book on it. Guy was based back in the day. But I remember watching his vids and thinking he was pushing his daughter a bit too much but I come from a house where my parents lived in fantasy land and gave me to the system.
Plenty of people did a dogshit job raising kids without a guide, for example: your parents. I asked about a specific guide somebody was already writing. Read the full post next time.
I spend YUGE amount of my childhood engineering walking machines, cartoon projectors and mechanical computer games and it was a LOT of fun and great for my mind.