I'm a big fan of OpenSCAD. I first used it to model a Wii Wheel sort of thing that I could put an Apple TV remote in. But my main use of it was creating a few dozen cars for a video game. Really great fun to model things. If you know CSS and HTML you know enough to create a 3D model in next to no time. https://blog.gingerbeardman.com/tag/openscad/