You might have read our previous post about 3D Model Repositories, and understand that there are, well, tons of them out there. We bumped into another one that was quite interesting, as it includes a large number of unique and free items, including many that are suitable for 3D printing.
All3DModel is the site we're interested in today. Try to ignore the suspicious spelling (we strongly suspect "Caninate" means "Cabinets", for example) and you'll find pretty decent categorization of many free models. However, note that the models are "not allowed for commercial use".
As always, enjoy!