Wrapping up an Intro course with one of my favorite topics: Consciousness (C)!
I really like how @anilkseth parses the conceptual space of C in this essay (a precursor to his recent book, Being You):
https://aeon.co/essays/the-hard-problem-of-consciousness-is-a-distraction-from-the-real-one
There's:
C level (awake vs coma);
C content (awareness);
C self (that little person in our heads who is driving it all; free will).
On the topic of free will & the brain, do you know of references appropriate for early undergrads? (No Penrose please).