FAQ #242: https://www.deviantart.com/help/242 - What are scraps?
"What are scraps?
Scraps, which are kept in the Scraps section of your user page, are incomplete or unrefined works that don't belong in your formal gallery. Things like sketches, quick snapshots, webcam pictures, and the like should be submitted to your scrapbook.
Where can I find my or another users scraps?
Scraps can be accessed by going to the profile page of the persons scraps you wish to view. Once on their profile page you will need to click on their Gallery link. From here the Scrapbook link will be accessible next to the 'Featured' & 'Browse' links."
Scraps are unfinished works, sketches, quick snapshots, webcam picture