You should use a laptop or computer. The boy will ask you 5 questions about the cuboid or cube you want to make and according to your answers a cuboid or cube will be made. When the boy says Your cuboid is ready or Your cube is ready then you can rotate the cuboid or cube by moving your mouse pointer. If you like this project then please fave and like it. Update 1.1 added a feature that lets you change the color of the cuboid or cube.