BOth books and ships are said to havea kind of soul, so i wonder if this is from the wood it is made from. Just like how the silk is special here, wood is important.
 I hope that the destroyed temple library is one day restored and perhaps enlargened. It could a spire wide project, with donations from many rich people. I wonder if hte last two books carry the remains of that developed soul at all.
The trees in this would might have unique properties. I have this idea that Grimm could develop powers similar to the ones Folly and her master have, but insteaad of his being getting holes he fills with madness, he could fill it with his ship. The ship could act like that cane or the collection of tiny crystals Folly has. It would be a perfect focus for gimm, as he hates being away from his ship.
 I can imagine like how the ship tracked the collection, it creates a star for albion and one for mist shark, and other key points. A ship that is never lost, able to point to every spire it has every visted, and track ships even though the thickest mist is invaluable. If it can percieve the ether and the currents, it could sail in almost any condition.
 I am imagining them being magical sips, similar to the live ships from the robin hobb books. They are aware ship with magical powers.
 I wonder what would happen if they started to show those trees in the spire, or simply a bonsai version of them.