3D Model: Design A Precise Toy UFO Measuring 4 Inches Wide By 4 Inches Tall (101.6mm X 101.6mm). The Base Is A Stylized Saucer Shape, 2.5 Inches (63.5mm) Tall, With A Circular Footprint And Slightly Beveled Lower Edge. A 1.5-inch (38.1mm) Tall Transparent Hemispherical Dome Cockpit Is Centered On Top. Inside The Dome, Create A Square Cavity Or "seat Hole" 2 Inches Wide And 2 Inches Deep (50.8mm X 50.8mm), Recessed 1 Inch (25.4mm) Into The Cockpit Floor, Designed To Fit A Small Toy Figure. The Seat May Be Slightly Offset From Center. On The Underside Of The Saucer, Embed A 1.2-inch (30.48mm) Diameter Omni-directional Ball Wheel, Mounted Flush To The Bottom Surface, Allowing Smooth Rolling In All Directions. Ensure The Wheel Is Visible From Beneath But Fully Recessed From Side View. Add Evenly Spaced Round Lights Along The Rim. Use Smooth, Molded Plastic Surfaces With Tight Tolerances For Potential Assembly.