Slate was shaped into sinks, bathtubs, tabletops, chalkboards, roof shingles, and headstones. Dowel joints are popular in chairs, cabinets, panels and tabletops. Flat bonsai display tables with rectangular tabletops are usually selected. Truly floating tabletops are not available with conventional OR tables. The modern-day kitchen tabletops were made of marble. For positioning patients on non breakable tabletops, positioning aids are available, i.e. inflatable cushions. Flat surface types refer to two-dimensional surfaces such as tabletops. Therefore, non-breakable carbon fibre tabletops are used. More robust options are available on many virtual tabletops. By age 5, Hendrickson was tap dancing on tabletops at family weddings.