Nicola Flannel's Hat

This felt hat, which was once owned by Nicola Flannel, comes with two feathers. One of them was dipped in abundance ink, letting her write down her recipes in her grimoire without ever replenishing it. The other one was dipped in invisible ink, letting her write down her secrets with the utmost discretion... (Place this headgear over other, already-equipped headgear to change its appearance.)