Marble (toy) conventions. Additionally, many glass artisans produce art marbles for the collectors' market only, with some selling for thousands of dollars. Marbles are made using many techniques. They can be categorized into two general types: hand-made and machine-made. Marbles were originally made by hand. Stone or ivory marbles can be fashioned by grinding. Clay, pottery, ceramic, or porcelain marbles can be made by rolling the material into a ball, and then letting dry, or firing, and then can be left natural, painted, or glazed. Clay marbles, also known as "crock marbles" or "commies" ("common"), are made of slightly porous clay, traditionally
Smart toy player for telling the child a story should not be classified as a smart toy even if the player contains its own microprocessor. What best distinguishes a smart toy is the way the on-board intelligence is holistically integrated into the play experience in order to create simulated human-like intelligence or its facsimile. Modern smart toys have their early roots in clockworks such as those of the eighteenth and nineteenth century cuckoo clocks, music boxes of the nineteenth, and Disney audio-animatronics of the twentieth. Perhaps the biggest early contribution is from novelty and toy makers from the 1800s who made automatons