Abstract: A set of thin, flat stencil plates are stacked together face-to-face to form a three-dimensional article shaped as a decorative article. The stencil plates are held together in the three-dimensional form by a connecting member or by frictionally interlocking them to one another. The stencil plates each contain one or more apertures of unique shapes, so the plates can be disassembled from the three-dimensional form and used individually as separate stencils. The stencil plates have peripheral outer surfaces which cooperate to form the three-dimensional shape of a selected design figure when the plates are assembled in a particular sequence, and the article, in its assembled form, conceals the stencils contained inside the finished three-dimensional article. The invention has use as a puzzle in stacking together the stencil plates in the proper sequence, and the finished article can be an art object or a toy, for example.