Abstract: The present disclosure relates to a toy. In some embodiments, the toy includes first cubic blocks, second cubic blocks, connectors, and pivoting shafts. For example, the first cubic block includes a first recessed space recessed from a first edge to a first center of the first cubic block, and a second recessed space recessed from a second edge to the first center. The second edge is perpendicular to and does not intercept the first edge. The second cubic block includes a third recessed space recessed from a third edge, and a fourth recessed space recessed from a fourth edge. Each of the connectors connects one of the first cubic blocks and one of the second cubic blocks. Each of the pivoting shafts connects a respective connector to one of the first and second cubic blocks that is configured to rotate around the respective pivoting shaft.