Bowl
Cast a book in gold to make a bowl. Books can be bent into the shape of a bowl, so then all you have to do is pour gold over it to keep it in that shape and ta-da! A bowl has been born!
はち
None
None
The gold bowl has a hatch (はち) attached to it, which used to be the book's back cover. That's fine, you use the hatch as a lid for the bowl!