Apparatus and methods are disclosed for sealing openings on containers and other structures, permitting selective removal of portions of the seal structure, and for similar selective removal of portions of adhesive elements such as bandages.

The puzzle with attachable and releasable pieces includes shaped puzzle pieces and a two-part base, which includes a front base section and a back baseplate. The puzzle pieces have rear-facing engaging mechanisms that are attachable to forward-facing male studs carried by the back baseplate. The puzzle pieces each have a particular outer shape determining placement. The puzzle may be stored with the puzzle pieces engaged to the back baseplate, but may be later released for repeat play by using a provided puzzle release mechanism.

An education and recreation tool, comprising a main body (10, 20) in shape of a board or any cube, with one or more cutouts (11-14, 21-27, etc) formed on at least one surface of the main body; a plurality of couples of puzzle pieces (111-114, 221-227, etc), wherein each couple of puzzle pieces are formed properly in order to be put fittingly into one or more cutouts on the main body, and each couple of the puzzle pieces consists of one upper puzzle piece and one lower puzzle piece in similar shape and size; and at least one character or image is provided on the top surface of each upper puzzle piece and at least one image or character is provided on the top surface of each lower puzzle piece to illustrate or explain the character or image on the top surface of the respective upper puzzle piece in the same couple is provided.

Disclosed is a rehabilitation training apparatus that is used when a stroke patient or the like performs rehabilitation training. A rehabilitation training system includes a main device in which a plurality of unit modules are disposed on a plane at a specific interval; a board plate inserted into or coupled to the main device and including a plurality of holes; and a plurality of pegs that are inserted into the holes of the board plate, wherein each of the unit modules includes a sensor module configured to detect insertion of a peg into the hole, and a light source module configured to output light of a specific color, and if the board plate is inserted into the main device, the light source module provides output light to the outside through the hole of the board plate.

An apparatus for shape and color matching retrieval games to be played in a body of water, such as a swimming pool, includes base stations, cover panels, and retrieval objects that players retrieve from the body of water during play of the game. The base provides a support to which cover panels can be removably affixed. The base and the cover panels each have on their top surfaces a series of position markers in the nature of slots formed in various geometric shapes. Each base and cover panel has a subset of retrieval objects matched in shape and/or color to its respective position markers. A method is provided for playing different versions of retrieval games using the base and the cover panels.

A multi-component collapsible and portable shape-sorting learning and development toy including a soft housing, an aperture plate element with a plurality of openings together with a matching number of blocks adapted to be inserted in the openings of the aperture plate element, a photographic display element, and a baby-safe mirror element. The toy and the individual component parts are adapted to a variety of uses for play.

A user-customizable audio-visual puzzle includes a platform having a base layer, a middle layer, and a top layer coupled together. The middle layer includes a first cavity therein. The top layer includes at least one cutout therethrough. The puzzle further includes at least one puzzle piece having a peripheral configuration shaped to correspond to the at least one cutout in the top layer. A drawer is configured to be removably positionable within the first cavity of the middle layer. The drawer includes at least one second cavity configured to be positioned generally beneath the at least one cutout when the drawer is positioned within the first cavity. The puzzle also includes a recording system configured to record a message associated with the at least one cutout.

The puzzle with attachable and releasable pieces includes shaped puzzle pieces and a two-part base, which includes a front base section and a back baseplate. The puzzle pieces have rear-facing engaging mechanisms that are attachable to forward-facing male studs carried by the back baseplate. The puzzle pieces each have a particular outer shape determining placement. The puzzle may be stored with the puzzle pieces engaged to the back baseplate, but may be later released for repeat play by using a provided puzzle release mechanism.

A series of educational multi-layered jigsaw puzzles based on the K-12 school curriculum in which puzzles progress in difficulty and pieces have liquid freeform cut lines, cut along the outlines or silhouette of the image, with puzzle pieces getting progressively smaller from top to bottom creating a tiered basin when all pieces are removed, where some layers are interchangeable and some are double-sided. In mathematical puzzles, the change of state from single to double digits is illustrated with a change of object, where the double-digit object is one that would consist of multiple instances of the single-digit object in real life, such as grapes and bunches, and pieces are non-geometrical, non-polygonal, non-spherical and purposefully difficult to distinguish by shape alone.

Provided herein are apparatuses and methods for re-usably printable puzzles. A chalkboard-based puzzle apparatus comprises a base including an indented layer comprising a board having a plurality of indented spaces, wherein each indented space has a flat bottom surface comprising a printable chalkboard material for writing upon with chalk or a chalk-like writing implement, and a plurality of puzzle pieces, wherein each puzzle piece is sized and shaped to match one of the plurality of indented spaces, such that each puzzle piece fits into a respective indented space. In an embodiment the indented spaces are cutouts through to a printable layer. In another embodiment, the indented spaces are indentations with a bottom surface comprising a printable material. The chalkboard-based puzzle apparatus may include the chalk or chalk-like writing implement and may include an eraser or cloth.