MOSS is a system of blocks and spheres that can be connected magnetically to create robots right out of the box, no knowledge of electronics or programming necessary.
My Dad was an engineer so I had lots of toys for which building was a part of the playing. We had an infinite number of Legos and Tinker Toys and an Erector Set that sort of scared me in it’s complexity. In fact, I don’t remember doing much with that one, although I remember my Dad building things. Ah, I see what he did