These items are fundamentally ornamental.
What are they good for? Someone suggested using them as frisbees, but I don’t think that they are really cut out for that, just because they have slight asymmetry and probably suboptimal aerodynamics. Based on their uniqueness, I suggest that they are collectables. What they really excel at is serving as a test print for new filament.
Each ornament is complete with an attachable stand to keep it upright.