The effect to anchor someone in a specific dimention is magical and therefore in no way linked to the actual physical object it is applied on.
Therefore it would make sense and offer more customization if the "boots of anchoring" were replaced by a selection of items to choose from when bringing the 4 mats to the quest giver (I don't bring her any boots but some blood, artifact, etc)
So on giving the 4 items we would be offered a selection between:
- boots of anchoring
- cloak of anchoring
- circlet of anchoring
- gloves of anchoring
- ring of anchoring
etc
It would also align this crafting with how it has been designed for Vale, Cannith, etc where you're not limited to a specific body armor to put your effects on.