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 Marbles were originally made by hand.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
Jumping jack (toy) Jumping jack (toy) The jumping jack is a toy whose origins date back thousands of years. The jointed jumping jack figure is a cross between a puppet and a paper doll. The figures are generally made from wood and their limbs are jointed and tied to a pull string. When the string is pulled and released, the arms and legs move up and down. Although the jumping jack is popularly thought of as a European toy, ivory dancer figures made to spin by pulling their strings, which were found at the archaeological site El Lisht and date back to ancient