One can still use the brains from some Lego Mindstorm toys or the Meccanoids.
The brains or bricks, are very much like Arduinos and can work well with the special servos and sensors that come with the toy kits.
It can make creating a working robot with moving arms and legs simply a matter of putting these parts into a robot skeletal structure and letting it do basic movements.
One could then get special code like Python to have these bricks do even more powerful things.
(under construction Oct 17, 2021)