This imaginative collection of collectible 3D puzzles takes inspiration from historical mechanisms and cog/gear motifs of the industrial era. These mechanical models arrive in sheets of sustainably sourced wood which you punch out and piece together to watch your creation come to life. Each is designed to be assembled without any glue, screws or external tools. Better yet, the mechanics actually work and operate without any batteries. Using only rubber bands, gears, cranks and gravity, each design moves in its own unique way. In an antiqued cream color with natural wood detailing, they also make great stylistic accents to any desktop or bookshelf.