Abstract: A book device structure for any and all book devices wherein one or more first attachments are operatively connected to either the front cover, back cover, or one or more internal pages, such that the attachments are functional and may be engaged with by a user of the device. The first attachments resemble a human or nonhuman leg or arm, such that the collective book device structure takes the form of a human or nonhuman character, figure, or individual. When applied to a written, printed, fillable, or blank literary or graphic work, whether published or not, the addition of one or more of these functional attachments to the book device produces unique functionality and a structure that resembles what is referred to as a “Book Character” device structure.

Abstract: A lid system for containers wherein the lid component features sensors for determining the amount of material stored in a particular container. The lid component of the system may be used as a lid at the top of the container or as a base at the bottom of the container. The lid features electronic modules that allow communication with smart devices.