Purple Duck Storerooms are short pdfs of experimental material. Spell components have lost of their luster over the years. They are a forgotten piece of non-equipment due to one culprit--the spell component pouch.
Within these pages you will find a new type of magic item, the heraldric device, that can be affixed to a mundane or magical shield to give it access to additional abilities based on the heraldry shown. This volume has over 30 monstrous visages to attach to your shield... two cursed ones.
I hope you find this reference useful for your game.