Construction set

Kiddicraft and Lego building blocks in different colors.
Lego bricks are a construction set example.
Interlocking disks enable the construction of high-symmetry models such as that of C
60
fullerene.
1970s No. 2 Meccano set
Geomag which uses rods metal balls and is Magnetic
Jeujura wooden construction set (Swiss chalet)

A construction set is a standardized piece assortment allowing for the construction of various different models. Construction sets are most often marketed as toys. Popular construction toy brands include Lincoln Logs and LEGO.