It more or less plays on rarity we dont have a limit to what you can use.
For example we have 4 set of rarities:
Common: bows, ribbons, cord, necklaces... etc
Rare: chains, souls feathers
Very rare: Anything plant, flower and trees. Hats are also very rare
Supernatural: its only used by Belliko-art in auctions. For example there is 2 foxfans with incense burners as necklaces those are supernatural trait.
I hope this helps