3D CAD Design for Functional Prototype

I need a detailed 3D CAD design for a functional prototype, intended for prototyping purposes. The final prototype will be made from plastic. Key requirements: – Design a functional prototype. – Utilize CAD software expertise… (Budget: $10 – $30 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, CAD/CAM, Manufacturing Design, Product Design, Solidworks)