Before Trimble transitioned to the current subscription-only landscape in 2020, SketchUp Make 2017 was the go-to for personal, non-commercial projects. Unlike the current web-based free version, the 2017 desktop edition allows you to:
Use powerful plugins from the Extension Warehouse to automate complex tasks, a feature strictly reserved for paid versions today. sketchup 2017 free version
Keep your files on your hard drive rather than relying solely on cloud storage. Key Features and Capabilities sketchup 2017 free version
SketchUp Make 2017 offers a robust set of tools that are surprisingly capable even by modern standards: Free Version - SketchUp - SketchUp Community sketchup 2017 free version