Here's a couple ideas...
#1) In class today we're going to talk a little about things which Hank and the nameless adventurer of Zork have in common with one another. My argument is that we can classify both A Connecticut Yankee and Zork as "engineering narratives." If this idea interests you, I want you to construct your own definition of "engineering narrative," using detailed examples from a work (film/tv/game/book) other than one we've studied for this class.
#2) Now that you know that Merlin triumphs, and that there was something to his magic, analyze the significance of Merlin or of the supernatural to the text, using specific examples. You should phrase it as a thesis "the meaning/significance of magic/Merlin in A Connecticut Yankee... is x.
#3) We've spent some time talking about irony, and we may get a chance to talk about the term oscillation (from science fiction critic Darko Suvin) today. Rather than asking what aspect of life in the 1890s Twain wants us to focus on, in theory, focus on what aspect of our lives or world the book (especially the last few chapters) does make us consider. How does Twain make you rethink some aspect of our world or life?