Digital Mockups of branded real life items are an easy and efficient way to visualise your finished products without having to physically build them first.
I recently took a Design Skills and Digital Fabrication course during which I learned to use Fusion 360 CAD software to sketch out products and render them in full 3D. As an Adobe suite user, I also added Adobe Dimension 3D to my skillset to focus on quick 3D branded product mockups.