This suggestion is for a Collection titled "Unassigned Designs". It would display all Designs not in any Project. I make a dozen versions of each Project and this would help to make sure they got into their proper Project folder.
Now, not everything I do actually goes on to be a 'Project'. Some are just experiments, and some I'm not sure I want to complete. The Unassigned Collection would also mean that these possibilities aren't buried under dozens of versions, and forgotten on Page 5.
A Collection for "Unassigned Designs""