Toy blocks are wooden, plastic, or foam pieces of various shapes and colors that are used as construction toys. Sometimes, toy blocks depict letters of the alphabet.
A set of blocks
Baby at Play, by Thomas Eakins, 1876.
Blocks with numbers, letters and pictures
A construction set is a standardized piece assortment allowing for the construction of various different models. Construction sets are most often marketed as toys. A popular longtime construction set toy brand is Lincoln Logs.
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