Every time I spin up a new project, I am confronted with the challenge of persisting its assets – audio files, iconography, artwork, video, strategic writings, etc. Where does everyone store these potentially high-value resources?
The traditional word for those is "files" and traditionally the system for persisting files is called a "filesystem". Several of them are available; I typically use ext4fs and, for compatibility with the guy down the street who prints them out on paper for me, VFAT. Git can be helpful for synchronizing them between computers, keeping backups, and tracking changes in them, though you might want to use something like git-annex for large files like video. If you're not using Git, rsync and http are also effective ways of copying them around; tar or zip can streamline this sometimes.<p>With respect to terminology, I think you're counting those on the wrong side of the ledger; I think they're liabilities, not assets.
Just a point of perspective, not technical advice:<p>Without an actual product, if icons, videos, etc. don't have value as fine art, they are not worth very much if they are worth anything at all. They are a sunk cost of doing business.<p>For the same reasons they were created instead of found and bought from some other dead project, people who need something similar will simply have it created.