The Google 3D Warehouse is a free repository for 3D content created using SketchUp.
Anyone can upload and SketchUp models they want, and anyone can retrieve the models and use them with SketchUp, or Google Earth .
Integration with SketchUp
After you download and install the plugin, 3D Warehouse and Google Earth will appear on the Plugins menu of SketchUp.
Placement, editing and reporting
RpReports is a add-on to assign attributes to components and create Bills-of-Materials and other reports.