[Robin flips through a bestiary she checked out from the library, one of the first things she asked for upon arriving in town.]

It says here they can be gotten from a creature called a cactuar. They're animated cactii that have a high running speed and can unleash a great deal of the needles all at once to attack its predators.

[She smiles as she shuts the book.]

Likely, they don't want to be turned into pincushions. But we'd get the needle at least.