Abstract: An interactive development toy for infants and children is provided comprising a flexible fabric envelope filled with a crumpled plastic film to provide a three-dimensional structure to the envelope. The envelope may include a fabric mesh through which the crumpled plastic film may by easily viewed when inserted. The shape of the envelope is immaterial, although in the preferred embodiment the envelope includes at least one edge element that may be easily grasped by an infant. Also in the preferred embodiment, the crumpled plastic film comprises a thin plastic film. Biaxially-oriented polyethylene terephthalate (boPET) polyester film has been found to be effective for this application due to its high tensile strength, iridescence, reflectivity, safety, springiness (memory), light weight, and crackling sound on handling. Many other plastic films also have these features, and perform comparably.

Abstract: A tape automated bonding tape segment carries on its top surface a printed circuit interconnect conductor high-density array having a plurality of signal, power and ground conductors. Burn-in testing pads are formed on either the top surface or the bottom surface of the tape segment, or both, and are connected to selected conductors. The testing pads are spaced apart and have a relatively low density to facilitate contact with test equipment, whereby a die connected to the printed circuit array can be tested.

Abstract: A puzzle toy is provided comprising a plurality of pieces which can be easily gripped and manipulated by a young child and which can be assembled and disassembled into various structural combinations. The puzzle comprises pieces of various sizes having an aperture therein for fitting around a post upstanding from the base. The pieces are so designed so as to allow them to be placed randomly on the post and by manipulating and jogging the pieces, the puzzle solver may order the pieces in size order about the post.

Abstract: An infant development toy comprising a plurality of rings of varying diameter connected to each other and to a central object by a flexible connecting means. Optionally, the connecting means may be extended outside the rings to form a primary handle and a bell may be contained within the central object or the primary handle. The rings and central object are of a size, and are spaced along the connecting means in such a manner that, when the toy is held aloft by and suspended from the point of connection of the largest ring and the connecting means, the rings are concentric and surround the central object.

Abstract: An infant development toy comprising a plurality of rings of varying diameter connected to each other and to a central object by a flexible connecting means. Optionally, the connecting means may be extended outside the rings to form a primary handle, and a bell may be contained within the central object or the primary handle. The rings and central object are of a size, and are spaced along the connecting means in such a manner that, when the toy is held aloft by and suspended from the point of connection of the largest ring and the connecting means, the rings are concentric and surround the central object.