A toy building block robot and a main control box thereof are disclosed. The main control box comprises a toy building-block robot main control housing, a toy building-block robot main control board, and a battery. The toy building-block robot main control board is installed in the toy building-block robot main control housing. The battery is connected to the toy building-block robot main control board, so as to supply power to the toy building-block robot main control board. A plurality of connection mechanisms are disposed on the toy building-block robot main control housing for engaging the toy building-block robot main control housing with other components of the toy building block robot. In the present disclosure, whether the assembly of the components in the main control box, or the engagement between the main control box and other components of the toy building block robot, can both be realized through a connection mechanism.

A construction system uses a comb connector element in combination with flat or generally planar polygonal shapes of various types. The comb connector elements connect to the edges of the planar polygonal shapes. Each comb connector has at least one pair of connector members. Each connector member has a proximal end connected to the polygonal member, and a distal end. Each connector member having a face portion that includes a recess extending from a central region of the face portion. The recess extends to the distal end of the face member.

The invention relates to a method for assembling an arrangement. The invention also relates to a corresponding assemblable arrangement. For the arrangement according to the invention, there are at least two groups of individual elements and each group comprises at least two individual elements. For each group of at least two elements within one group of elements, the at least two elements can be fitted together. Further, the at least two elements of one group can be fitted together with at least two elements of another group. Each group of elements forms a layer of the arrangement. The arrangement, when assembled, forms a three dimensional object.

The invention is a cost effective, structural building set, suitable as a toy, using post connectors (10) comprised of a post (12) with attached disks (14), or similar devices that insert into cutouts (31) in geometric shaped component parts (30, 80). More than one component part can be connected to the same post connector, and such component parts can rotate relative to the post axis. The connector design allows construction of stable structures of many sizes, shapes, and types, and readily facilitates hinging between different sections of such assembled structures. Many variations of the invention are possible, including connection with other types of construction elements (530, 570, 580, 584, 602, 640), structural element figurines (900), spinors, (512), various shape post connectors (612, 618, 620, 611) and faceplates (632), blocks (550), faceplates (576), lenses (590), catapult/slingshot (680), periscope mirrors (660), tubes (672), wheels (925), spherical elements (915), figurines (900), animal parts (944, 947, 950), and plane parts (954, 955) and more.

A building block comprising an octagonal building block body, the building block body has upper and lower surfaces thereof respectively provided with four symmetrical upper and lower protruding blocks, the upper and lower protruding blocks are respectively arranged in the shape of a cross, each of the upper and lower protruding blocks is respectively provided with an engaging notch; on the building block body, the four upper and four lower protruding blocks divide and form four planes, which are respectively provided with a notch, and a plurality of building blocks can be connected, by using the engaging notches on the upper and lower protruding blocks or the notches on the planes, in a diagonal engaging manner, a vertical engaging manner, or a horizontal engaging manner, so as to assemble a variety of building block combinations.

Water reveal objects and methods of making and using same are described. In some embodiments, the objects are three-dimensional objects (e.g., animals, figurines or toy models) that are assembled by the user from a variety of pieces. The pieces may be comprised of multiple layers, such as a base layer, a film that includes one or more designs covering the base layer and a water-reactive coating that hides the one or more designs when the coating is dry and reveals the one or more designs when the user brushes water on the coating. The coating and film may be on one or multiple sides of the pieces. The pieces may be provided to the user in a sheet that is partially precut to facilitate removal of the pieces. In other embodiments, the present disclosure provides a sheet or roll of stickers.

A construction toy system including a plurality of modular assembly pieces and a plurality of pivotal-rods. Each of the pivotal-rods includes an identical engaging rod-tips on each end thereof. Each of the assembly pieces have identical thickness and a circumferential edge. A number of straight receiving grooves are formed, inwardly, at the circumferential edge, wherein the identical thickness is predesigned to fittingly fill the gap formed by the straight receiving groove. A select assembly piece is configured to interlock with another assembly piece via the straight receiving grooves of both selected assembly pieces. A selected assembly pieces may have at least one identical circular through hole formed at a central location with respect to the lateral dimension of the assembly pieces, wherein an engaging rod-tip of a selected pivotal-rod may engage with a selected circular through hole of the selected assembly piece.

A wooden construction assembly is disclosed. The wooden construction assembly includes a first set of construction units comprising a first plurality of apertures, wherein the first set of construction units is elongated and comprises at least three different lengths. The wooden construction assembly includes a second set of construction units comprising a second plurality of apertures, wherein the second construction unit is triangular and comprise of at least two different area sizes. A first construction unit of the first set of construction units is configured to be placed in the aperture of a second construction unit.

Implementations described and claimed herein provide systems and methods for delivering a customizable feedback stimulus. In one implementation, a custom feedback device comprises a shell housing having a first shell and a second shell. The shell housing opening extends between an outer surface of the first shell and an outer surface of the second shell. A plurality of protrusions extends between the first shell and the second shell, and at least one receiving area is defined by the plurality of protrusions between the first shell and the second shell. The receiving area is adapted to house a customized portion.