Construction set elements

A construction set element comprising:

• an upper wall having an upper surface and a lower surface opposite to the upper surface,
• wherein a plurality of pegs protrudes from the upper surface, and
• wherein the pegs have a uniform size and shape and are positioned in a matrix;
• a bottom side that is opposite to the upper wall and defines a nest opening and a plurality of openings for receiving pegs of the size, shape, and positioning associated with the pegs;
• a wall that extends perpendicularly from the upper wall to the bottom side
• wherein the wall has an opening defining a cantilever member,
• wherein the cantilever member has a first end joined integral with the construction set element and a second end that is opposite to the first end and is unsupported and deflectable relative to an initial position of the cantilever member, and
• wherein the second end has a hook protrusion protruding toward an interior of the nest opening;
• and
• a plurality of sidewalls extending between the upper wall and the bottom side,
• wherein the nest opening is configured to receive into the nest opening a second construction set element having a distal edge and a proximal recess adjacent to the distal edge, such that the second construction set element nests flush with, or within, planes defined by outer surfaces of the upper wall, the bottom side, and the plurality of sidewalls, with the hook protrusion disposed in the proximal recess.

A construction set element comprising:

• a cylindrical body defining a longitudinal axis;
• and
• an interior base wall disposed inside the cylindrical body and perpendicular to the longitudinal axis of the cylindrical body,
• wherein a nest opening is defined by the interior base wall and the cylindrical body on a first side of the interior base wall,
• wherein a bottom opening is defined by the interior base wall and the cylindrical body on a second side of the interior base wall opposite to the first side of the interior base wall,
• wherein a wall of the cylindrical body on a first side of the interior base wall has an opening defining a cantilever member,
• wherein the cantilever member has a first end joined integral with the construction set element and a second end that is opposite to the first end and is unsupported and deflectable relative to an initial position of the cantilever member,
• wherein the second end has a hook protrusion protruding toward an interior of the nest opening,
• wherein the interior base wall defines an opening adjacent to the wall,
• wherein the first end of the cantilever member is disposed adjacent to the opening of the interior base wall, and
• wherein the nest opening is configured to receive into the nest opening a second construction element having a distal edge and a proximal recess adjacent to the distal edge, with the hook protrusion disposed in the proximal recess.