Abstract: A method of manufacturing a set of paintable pieces with display faces. The pieces are configured to be assembled together such that the display faces can be arranged side-by-side to form an artwork canvas. The method includes: (a) positioning a canvas piece against an inside surface of one portion of a mold; (b) securing a second portion of the mold to the first portion to form a mold cavity containing the canvas piece; (c) feeding a molten polymer into the mold cavity such that the polymer fills the mold cavity and solidifies to form a paintable piece with the canvas piece forming the display face; (d) separating the portions of the mold and removing the paintable piece from the mold cavity; and (e) repeating steps (a) through (d) a plurality of times to manufacture a set of paintable pieces. Paintable pieces and kits containing paintable pieces are also disclosed.