I started writing a speech about how a trip abroad made me more nationalistic "because home is where the person I love lives." I wrote about how the awe I felt over the foreign country's sunset made me love my own country more because I remembered the people who lived there. And I wrote many other things, completing the speech in my dream--with editing and revisions, too.
It was done when I woke up, and my dream self was eager to deliver it. Of course, when I woke up, everything faded away.
Which reminds me, I once wrote an entire horror screenplay in a dream.