To dream of ninja stars represents conflict or division that is precise. Knowing exactly how to get rid of something or attack something you don’t want.
Positively, ninja stars reflect your own ability to react to a problem with the perfect solution.
Negatively, ninja stars symbolize problems in life that are perfect in their ability to fail you. Something in your life that always seem to do exactly what you don’t want.
To dream of seeing sitting on a shelf may represent a perfect solution to a problem that you are waiting for.