There may have been a suggestion for something similar in the past, but I think it might be a good idea to spin straw/silk and gold together to make golden thread. This might possibly be a curio, that can be woven into golden fabric and eventually golden clothing.
It would add more cosmetically appealing items into the game and more uses for silk/straw/gold.
Potentially: Cape, Robe, Tunic as generic ideas to give more of a royalty vibe to kingdoms.