You can use Blender for free (blender.org) and start learning how to create 3D models right away. Want the "Rosie the Robot" model? It's only $16. You can get it here: https://www.cgtrader.com/3d-models/character/sci-fi/rosie-the-robot. AI has come a long way since then, but this is a cool idea. If you're just getting started, there are some great tutorials on YouTube.
3D Rosie the Robot fi cartoon robot ai jetsons rosie character, formats OBJ, BLEND, ready for 3D animation and other 3D projects