All Aboard. The Sorting Bus contains colorful shapes that when sorted correctly, will fit inside the vehicle. When the sign on the bus is pulled, all the pieces will slide out, ready for another go. All colors are made from vegetable dye. PlanToys® are made from recycled rubberwood that is non-chemically treated. Design is combined with an innovative use of materials to encouraging more creative play, enabling children to have fun and learn while become closer to nature.