Over the past few months, I've been building this open source tool to help me plan, catalog, and design complete drawer organization systems. One of the challenges as I got into this hobby is that I really suck at 3D modeling, but I know what good code looks like so it was easier for me to create a whole ass parametric 3D CAD library than it was to learn fusion.
I hopeful this helps others who have recently discovered Gridfinity and feel overwhelmed by where to start. Feedback is always welcome over at https://github.com/andymai/gridfinity-layout-tool