A book made up of pages is described. At least some of the pages contain both space for manually-created visual content, and instances of preprinted indexing target symbols. Each of the indexing target symbol instances has at least a portion within one inch of three unbound page edges. When the book is closed, the instances of each particular indexing target symbol are in a substantially collinear stack that is substantially perpendicular to the faces of the pages.

A method of reusing a notebook provides a notebook having a synthetic-paper page. The method also provides a thermochromic ink pen which, when used to write on the synthetic paper page, leaves thermochromic ink markings. The method further provides a moisture carrier configured to have a liquid diffused therein. The moisture carrier is configured to erase the thermochromic ink markings from the synthetic-paper page by contacting the thermochromic ink markings when the moisture carrier is moist. The method then writes with thermochromic ink on at least a portion of the synthetic-paper page. Liquid is diffused in the moisture carrier, and the portion of the synthetic-paper page having the thermochromic ink is wiped with the moist moisture carrier, such that the thermochromic ink is erased from the synthetic-paper page.

Disclosed herein are devices and methods for an interactive book configured to enhance a user's vocabulary. In some embodiments, an interactive paper-based book comprises a back cover comprising a plurality of touch sensors and an audio module and a plurality of paper pages that are stacked together on top of each other. In some embodiments, each of the pages comprises a grid array of images associated with a plurality of words. In some embodiments, the grid array of images on the plurality of pages are aligned with the plurality of touch sensors on the back cover. In some embodiments, each of the pages and a set of audio files for each page are configured to be activated using a page button corresponding to the respective page. In some embodiments, the page buttons are located on one or more portions of the book. In some embodiments, the audio module is configured to play one or more sounds associated with an image on an activated page when the user touches the image on the activated page.

Provided are a hinged laminate body, a booklet, and a laminate body that are able to increase the installation area of a member for authenticity determination. A hinged laminate body is configured so as to be able to increase the installation area of a member for authenticity determination by being provided with: an upper transparent layer; watermarked paper that is arranged below the upper transparent layer; and a hinge layer that has a hinge portion protruding from the upper transparent layer in a plan view and that is arranged below the watermarked paper. The watermarked paper of the hinged laminate body is provided with: an inner watermarked paper section that is arranged between the upper transparent layer and the hinge layer; and an outer watermarked paper section that is provided to the hinge portion so as to be arranged contiguously with the inner watermarked paper section.

A toy is disclosed. The toy includes a two-sided frame. The two-sided frame has a first side configured to hold a set of images and a second side includes an acrylic mirror. The toy further includes a stand configured to hold the two-sided frame. The stand has two notches opposite each other.

A method of reusing a notebook provides a notebook having a synthetic-paper page. The method also provides a thermochromic ink pen which, when used to write on the synthetic paper page, leaves thermochromic ink markings. The method further provides a moisture carrier configured to have a liquid diffused therein. The moisture carrier is configured to erase the thermochromic ink markings from the synthetic-paper page by contacting the thermochromic ink markings when the moisture carrier is moist. The method then writes with thermochromic ink on at least a portion of the synthetic-paper page. Liquid is diffused in the moisture carrier, and the portion of the synthetic-paper page having the thermochromic ink is wiped with the moist moisture carrier, such that the thermochromic ink is erased from the synthetic-paper page.

A writing system that includes a reusable notebook including a sheet having a working surface. The working surface includes a printed code and an operative control. The writing system includes a writing instrument configured to capture images of the printed code and a computing device configured to communicate with the reusable notebook and/or the writing instrument. The sheet includes a surface coating over the working surface configured so that a writing material of the writing instrument can be removed by applying a dry ancillary device.

A book has a front cover having a first edge which is unconnected, and an opposing second edge which is connected to a spine. A back cover has a first edge which is connected to the spine and an opposing second edge which is connected to flexible joint or fold-line. The book has a third cover having a first edge which is connected to the flexible joint, that couples the third cover to the back cover, and an opposing second edge which is connected to binding. The front cover is configured to fold back about the spine to retain the third cover proximal the outer edge of the third cover to retain the book in a propped-up position for reading. A page holder slides along the left and right sides of the third cover and has an opening that allows a page to be pushed therethrough.

A book or smart device case in which a smart device can be embedded is provided. The book or smart device case not only contains the content and pictures with a story, but also has a smartphone storage unit inside so that parents do not let their children know that they are using a smartphone, and it can be stored regardless of the size or shape of the smart device and whether or not a protective case is installed.

Attachment systems, components, and methods are described herein that use a combination of attachment, anchor, or retention mechanisms to secure components to one another. By one approach, a combination of flap, swing clip, and notch features incorporated into one or more devices to provide the ability to attach or combine devices of multiple formats. In some configurations, the attachment systems include a device with at least one panel having a flap and a swing clip on a free edge thereof. The attachment systems also may include at least one attachable device having at least one panel with a notch formed on a free edge thereof. The attachable devices may be attached to each other in a configuration where the notch is aligned with the flap and the swing clip is in a closed position such that the notch and the flap are nested within the swing clip.