Did some recruit just add a useless material to the treasury? Is said material NOT used to craft Hunters' Lodge statues? What a bother. Can't even call a GM to retrieve it for you, too!

You know what would be a quick and simple solution? Allowing Officers and Guild Masters to sell the materials to the Birdsong Emporium shop as we would sell materials to any other NPC vendor. Not only would this allow you to remove those useless materials from cluttering the treasury, you can actually MAKE USE of them!