The Popular Playthings Playstix Construction Toy set allows you to build the ordinary and inspires you to build the extraordinary. The 150-piece set of Playstix allows you to build a wide variety of models right out of the box, without the need for any additional or specialized parts. The set comes with an idea booklet that illustrates fun things to build from a simple table and chair to a two-story cabin. Each Playstix piece has grooves that interlock when one Playstix piece is placed across another. The different length pieces are color-coded, so it's easy to see how each model is built.