The quilled needles of the hedgehog currently don't have much of a function. As a curio they are underwhelming. It would be neat if some uses could be made out of the quills.
* Used as a needle ingredient for a type a medical suture.
* Crafted into a caltrop, drop on ground if someone with non-armor shoes steps on them they get a slow (de)buff/Quill'd (would be handy to run away from people with rabbit shoes in pvp).
* Made into a hairpin, head slot or curio, attaching different bird feathers to raise Q.
* Crafted with a block to make a spike ball to launch with a sling for extra damage.
* Acupuncture, like leech, take Quill'd for chance to heal nerve damage.
* Tailor's kit, repairs a small amount of armor durability.
* Voodoo doll, using scents from a crime, one of the dolls and quill, you can make a curio, or it could effect the criminal in some way.