I always try to leave a note when I dream something interesting. Sometimes it doesn't make sense at all like 2nd note above, sometimes it's just a strange thing that the vision is still vivid even if I'm half conscious so I can draw a picture of it.
One of my lifetime dreams is living in a treehouse. I came across with an architecture project called "Treehotel" in Sweden. I think it will look interesting if the room gets higher as the base tree grow.