A method and system of attaching rivets to secure sheets of paper together. The rivets have a head, a recess, a skirt and a tail. A tool is configured so that the tail fits through a hole in the tool. Before the tail is inserted into the hole in the tool, the tail is inserted through two holes in the paper(s) and then in the hole in the tool. Pressure is placed on the paper by pressing downward on the tool thereby causing the paper(s) to snap into the recess, thereby securing both pieces of paper together.

The invention relates to the field of toys, including children's construction sets, and can be used during the production of elements of children's construction kits for making three-dimensional models. The present construction set element is a convex body and is provided with studs on its upper part, main grooves on its lower part, additional grooves on its side faces, and a locking button. The element is made from a contoured blank having uniform thickness of the surface formed from a pulp based on a fibrous substance. The universality of a construction set element and the combination possibilities of the elements are increased, the coupling efficiency of the construction set elements with one another is increased, and the technique for manufacturing the element is simplified.

The invention relates to the field of toys, including children's construction sets, and can be used during the production of elements of children's construction kits for making three-dimensional models. The present construction set element is a convex body and is provided with studs on its upper part, main grooves on its lower part, additional grooves on its side faces, and a locking button. The element is made from a contoured blank having uniform thickness of the surface formed from a pulp based on a fibrous substance. The universality of a construction set element and the combination possibilities of the elements are increased, the coupling efficiency of the construction set elements with one another is increased, and the technique for manufacturing the element is simplified.

Disclosed herein is a toy building unit for playing capable of folding from a flat position into a three-dimensional hollow position.

A computer-implemented method for creating a digital canvas for printing on a foldable medium enables a user to create custom designed folded objects, such as custom designed origami envelopes. The method involves receiving a specification and a user input, and placing an image at a desired location within the digital canvas based on the specification and the user input. The specification comprises a first data set describing an intermediate configuration of the folded object and a second data set describing a folded configuration of the folded object. The user input defines a position and/or an orientation of the image in at least one of the intermediate configuration and the folded configuration.

A computer-implemented method for creating a digital canvas for printing on a foldable medium enables a user to create custom designed folded objects, such as custom designed origami envelopes. The method involves receiving a specification and a user input, and placing an image at a desired location within the digital canvas based on the specification and the user input. The specification comprises a first data set describing an intermediate configuration of the folded object and a second data set describing a folded configuration of the folded object. The user input defines a position and/or an orientation of the image in at least one of the intermediate configuration and the folded configuration.

Disclosed are mobile toys using paper craft which can be widely applied in various ways, as well as being friendly and attracting interest by operating a paper model. The mobile toy using paper craft includes a drive device including at least one operating unit which is operated by a power, and a paper model including a plurality of model units which are made on the basis of a development figure and are assembled and engaged to an outside of the drive device to form a toy, at least one of the mobile units being detachably engaged to the operating unit.

Disclosed are mobile toys using paper craft which can be widely applied in various ways, as well as being friendly and attracting interest by operating a paper model. The mobile toy using paper craft includes a drive device including at least one operating unit which is operated by a power, and a paper model including a plurality of model units which are made on the basis of a development figure and are assembled and engaged to an outside of the drive device to form a toy, at least one of the mobile units being detachably engaged to the operating unit.

Disclosed herein are toy building units of a toy building set. The building units comprise a sheet of a material that defines a net of a polyhedron, the sheet having a plurality of sections, each section being connected to another section with a hinge. The building units are configured to fold at the hinges from a flat configuration into a polyhedron with a hollow interior. The building units also comprise a plurality of joins on outer edges of the building unit, each join comprising one or more teeth configured to interleave with teeth of another join and releasably connect the sections of the building unit to form edges of the polyhedron. The sections, hinges and joins are all provided on one piece of the same material.

The toy structure kit includes an accessory defining an opening, a toy structure defining an opening, and a connector having a base member and a collar, the connector configured to couple the accessory to the toy structure, the base member including a first projection member and a second projection member, the first projection member configured to extend through the opening defined by the accessory and receive the collar, the second projection member configured to extend through the opening defined by the toy structure.