Logo was my second programming language after basic when I was around 9 years old. I did not have access to much lego in my country but agree that it is a very good way to stimulate young minds. My son’s just 3yo and since he was about 2 we started playing with lego blocks, at the beginning large ones then moved onto regular legos. I am very reluctant to introduce him to the digital world and will delay that for as long as possible. Instead I will be buying phisical kits, puzzles and games for him and let him explore this way. Luckily he’s not into action figures and weapon toys.

Logo was one of the 3 I first picked up on Assembler, BASIC and Logo. My first computers weren't capable of running LOGO (no real display). I didn't have a LOGO interpreter so I coded one in BASIC. By god it was slow. But I did pick up structured programming and it led me on to LISP (and SASL/CLU,Pascal,Modula 2). Somehow I still ended up using C/C++ daily. I guess that's just how it goes. But LOGO was and is nice. It (almost) has what my dad calls IKR (Immediate Knowledge of Results) and if LOGO were to develop further it is exactly the area of realtime interactivity I think it should move. Great language with a lot of thought put into it but still very much a product of its era.

Or give them programming books with pictures nice for kids to follow up.

https://spectrumcomputing.co.uk/list?genre=Book