These are toys aimed at children yet have great value in creating robots. In fact - building real robots with these toys has become a great educational aid for teaching physics, electronics and many other subjects.
Some people can get a little evangelical about only using a single construction toy and not using any custom parts - but for the sake of building robots - it may be better to swap and choose.
Time to build your own robot! Using a Raspberry Pi with parts and some time, you can use my book to learn how to make and program a robot with automatic behaviours.