[qubes-users] Storing Files besides AppVMs on secondary (external) drive

I successfully setup external SSD Drive for storing AppVMs on it - https://www.qubes-os.org/doc/secondary-storage/

Of course I am using LUKS encryption of entire SSD and all works fine.

But besides AppVMs I need to store large files on this SSD Drive. I know that I have definitely one way to do this, for example: Create AppVM >> Increase a Private storage size >> Send the files to AppVM.
The disadvantage of this method is that using files is possible only when the AppVM is launched.

Are there any use cases of files besides AppVM creation/launch? For example I want to create Folder where I will store my files which I could use in any AppVM, is it possible?