I have an idea for a package design for glueless carton for packaging one of my products in but I have no ideal where or what type of cardboard or paper I would need to make a prototype for my design. Where would I get the necessary materials to make a mockup or protoype for a package design for a product? Would it be necessary to get a CAD designer to assist me with making a mock up of the design for me so I could patent the design?