BUR #3641 has been approved by @evazion.
create implication monocle_hair_ornament -> hair_ornament
create implication musical_note_hair_ornament -> hair_ornament
create implication bone_hair_ornament -> hair_ornament
create implication shark_hair_ornament -> hair_ornament
All of these tags are (decently) popular, however, no implication has been made for them yet.
EDIT: Added shark hair ornament as well.
EDIT: The bulk update request #3641 (forum #174063) has been approved by @evazion.
Updated by DanbooruBot