Each Spirit was made up of a certain form or concept that made up a large portion of its very existence.
That included the various capabilities and the power or ability it would possess.
Certain Spirits had their power that let them do certain things that were related to their form or concept while some were quite simple and others were more magical and complicated.
The black bandage Evil Spirit had a form or concept that was based around wrapping or binding but it had mainly had the form of a bandage or could be described as a ribbon and long strip of material.
Just like how disaster-related Spirits could possess great powers related to their concepts that could produce better results in an environment more suited to them or to help toward influencing a disaster similar to their concept, it was similar for others.