As we begin to assemble a stock of models, we would be well served by having standards for models. TurboSquid has spent quit a bit of effort in this area and we should at least be aware of what a functioning "warehouse" could require. Here is a link to their FAQ section. https://support.turb...on-faq?locale=1
Z, please feel free to remove this link if you feel it is inappropriate.
Thanks for reading.
Especially on the subject of furniture, there are models and there are models. Different people will have different requirements of the models. Some people will want just a complete presentation of a piece of furniture, to use in a scene, whereas others intend to make the furniture, and need it to be constructed from individual parts, preferably with suitable object names, layers, and grouping of, for example, the parts which make up a door or drawer. I had a look at the 3dSky repository which Andrew West mentioned. Most are in max format which we can't open, without the Autodesk software, but I did find one in obj. It was complete but a single 3d object so only suitable to use in a scene, maybe some of the pay-for ones were more comprehensive. It might be a good idea to release 2 versions of a model: a free or cheap one which consists of a single object, and a pay-for one which contains the individual object parts. For the former, use in [a scene] could in some cases positively generate product sales for the manufacturer, whereas in the case of the second, there could be negative rights issues if the item is replicated in the flesh. I personally prefer to design and make my own furniture, but it can be time consuming, but it can be useful to use other models as accessories to compose a scene, for which a single object model is often sufficient.