Ability to create folders in NotebookLM would be very useful. Tags can be used similarly but not the same.

I have found the button. Congrats, for me it is really useful! Would it be possible to expand the "source folders" functionality into "notebook folders"? I have many notebooks on the same topic (e.g., deer, boar, invasive species), and over 200 notebook "notebook folders" can help keep them in order.

Let me think. But just because all data is stored locally, some users do not know that if they remove the extension, all data will not sync with NotebookLM. So, make the support more complex.