A device (2) for training and stimulation of dogs or children, which device (2) comprises a number of elements (6, 6′, 8, 8′, 74, 76, 78, 80, 88, 88′, 90, 90′) configured to be locked and thereby fix and at least partly hide a number of tidbits (4, 4′, 4″, 4″), wherein the device (2) has activation members (12, 12′, 12″, 12′″, 14, 16, 26) for opening/detachment of the elements (6, 6′, 8, 8′, 74, 76, 78, 80, 88, 88′, 90, 90′). The elements (6, 6′, 8, 8′, 74, 76, 78, 80, 88, 88′, 90, 90′) prevent one or more of the other elements (6, 6′, 8, 8′, 74, 76, 78, 80, 88, 88′, 90, 90′) from being opened/detached in such a manner that a first element (8′) is required to be opened/detached in order to open/detach another element (8).

A construction support device is disclosed for support and assembly of planar members into complex structures. A construction support device can comprise a first and second unit that are separable where each support unit comprises a plurality of sinuate grooves between a plurality of sections with sinuate edges. The sections are flexible about a center to increase the width of the sinuate grooves to receive greater thickness of planar members. A cubic embodiment with flat outer surfaces and a spheric embodiment with round outer surfaces are disclosed.

Polycube-based puzzles are disclosed. Three-dimensional Sudoku-like puzzles using polycubes of various sizes and dimensions, where the cubes making up each polycube have visually identifiable features on all sides such that sets of polycubes can be created to facilitate the Sudoku-like puzzle game. Polycube-based puzzles using sets of polycubes arranged in different configurations where each side of a resulting combination of a set of polycubes has no repeated visual identifier.

A linked sequence of mechanically encoded puzzle pages is disclosed. Each page is comprised of multiple planar layers interconnected to implement the puzzle design of the page. The puzzle of each page must be solved to disengage a latching mechanism enabling the player to turn the page and begin solving the puzzle in the next page. Similarly for the next page, and each succeeding page until the last page, solution to the puzzle by the player will disengage a latching mechanism. The latching mechanism holds the active page being solved by the player to the next page. In the implementation of the invention described in this disclosure the latching mechanism comprises a hooking piece protruding in a perpendicular direction from the planar front surface of the next page, where the hooking piece fits into an opening on the planar back surface of the active page and a blocking piece on the active page is aligned between the hook portion and the exit to the opening, thereby preventing the hooking piece on the next page from disengaging from the active page.

A linked sequence of mechanically encoded puzzle pages is disclosed. Each page is comprised of multiple planar layers interconnected to implement the puzzle design of the page. The puzzle of each page must be solved to disengage a latching mechanism enabling the player to turn the page and begin solving the puzzle in the next page. Similarly for the next page, and each succeeding page until the last page, solution to the puzzle by the player will disengage a latching mechanism. The latching mechanism holds the active page being solved by the player to the next page. In the implementation of the invention described in this disclosure the latching mechanism comprises a hooking piece protruding in a perpendicular direction from the planar front surface of the next page, where the hooking piece fits into an opening on the planar back surface of the active page and a blocking piece on the active page is aligned between the hook portion and the exit to the opening, thereby preventing the hooking piece on the next page from disengaging from the active page.

A hand occupying device and system of use is a lava rock or synthetic equivalent having a plurality of pits disposed about the exterior surface of the lava rock into which a soft and dried latex glue is disposed. A user utilizing a dental pick or similar device may then remove both the dried and pliable latex glue from each individual pit.

According to some embodiments, a fidget toy comprises a first portion and a second portion. When the first portion is intertwined with the second portion an image is revealed. The first portion is a coil and the second portion is a coil. Respective portions of the image are disposed over a length of the first portion and a length of the second portion.

The invention is a game for amusement including a cabinet, a ball and one or more targets wherein the ball can be flicked by a player's finger in an attempt to contact, engage or activate the one or more targets.

A linked sequence of mechanically encoded puzzle pages is disclosed. Each page is comprised of multiple planar layers interconnected to implement the puzzle design of the page. The puzzle of each page must be solved to disengage a latching mechanism enabling the player to turn the page and begin solving the puzzle in the next page. Similarly for the next page, and each succeeding page until the last page, solution to the puzzle by the player will disengage a latching mechanism. The latching mechanism holds the active page being solved by the player to the next page. In the implementation of the invention described in this disclosure the latching mechanism comprises a hooking piece protruding in a perpendicular direction from the planar front surface of the next page, where the hooking piece fits into an opening on the planar back surface of the active page and a blocking piece on the active page is aligned between the hook portion and the exit to the opening, thereby preventing the hooking piece on the next page from disengaging from the active page.

A linked sequence of mechanically encoded puzzle pages is disclosed. Each page is comprised of multiple planar layers interconnected to implement the puzzle design of the page. The puzzle of each page must be solved to disengage a latching mechanism enabling the player to turn the page and begin solving the puzzle in the next page. Similarly for the next page, and each succeeding page until the last page, solution to the puzzle by the player will disengage a latching mechanism. The latching mechanism holds the active page being solved by the player to the next page. In the implementation of the invention described in this disclosure the latching mechanism comprises a hooking piece protruding in a perpendicular direction from the planar front surface of the next page, where the hooking piece fits into an opening on the planar back surface of the active page and a blocking piece on the active page is aligned between the hook portion and the exit to the opening, thereby preventing the hooking piece on the next page from disengaging from the active page.