This is loo seat for the toddler. This is common design. If you want custom design you have to contact with me. Any design idea possible. 3d printable stl file attached. If you 3d print it you have to choose strongest materials to print it. Wall thickness of the 3d model is 2mm.3d editable STEP file formats will be provide on demand, but a STEP file attached. If you have any feedback about the design please don't hasited.

Thanks,Mahbub