Sirgjoonelise liikumise lisakomplekt
http://www.makeblock.com/
Rectilinear Motion Robot Pack from Makeblock contains four kinds of Makeblock components, mainly used to build linear motion mechanisms. For example, attach a nylon pulley to Makeblock beams to give your robot a smooth linear motion.
https://www.sphero.com/education
http://www.dinotoys.cz
https://www.makewonder.com/
https://eu.littlebits.cc/bits/littlebits-power
http://www.viborg-ballon.dk