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.

Lego - MindStorms Lego RCX
Capsella
Mechano
MegaBloks
K Nex
FischerTechnik

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.

We have also recently come across an interesting idea allow the interconnection of K Nex and Lego called Sploids.

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