Magic Slate Paper Savers have entertained children for decades. The zero-tech tablets allowed children to draw and quickly erase their work repeatedly without needing to recharge between uses.

Part of the toy’s appeal was its practical design. Each slate was constructed from rigid cardboard and contained a section of waxed paper covered by a transparent sheet of acetate. When users wrote or drew on the surface using the plastic writing stylus, the acetate adhered to the wax, causing the wax’s color to appear through the sheet. Undoing the process was achieved by simply lifting the plastic sheet and clearing the slate