The Voyage Of The Dawn Treader could be a challenging to do on stage because most of it is out on water. It could be like the Broadway production of The Little Mermaid. What you could do is for the Dark Island, you can have all the lights go out, and have a spot light on the ship or use lanterns.
I haven't thought of that one, though I've seen a broadway production of The Little Mermaid. And interesting thought about the the lanterns in the Dark Island.
The Silver Chair- You could have Puddleglum, Eustace, and Jill slowly walking North. You could also have all the lights turned out for the Underland.
Interesting thought.
The Magician's Nephew- When Digory and Polly each put on the rings, all the lights go out, they could "appear" in the wood between the worlds. Even when Polly puts the ring on first, the lights go out and come back on to make it like she had disappeared.
I think there also could be the lights out when they first arrived in Narnia, then have little dim light when the stars start to sing. Narnia is being newly created.
The Last Battle- What you could do is where King Tirian is having his dream or vision, you can turn off the lights then have the Seven Friends of Narnia come on. Then Tirian can all of a sudden show up. Another is where Tash is coming into Narnia, have all the lights turn out. You could even also have where Tirian takes Rishda into the stable, and all the lights turn off. Then have one spotlight on Tirian for a moment. When Tash shows up to take Rishda, have another spot light on them.
I think you could even have where Poggin is overhearing Rishda and Ginger talking of their secret plan, two spot lights- one on Poggin and the other on Rishda and Ginger. And everything else would be pitch black.
You could even have for The Horse And His Boy, where Lasaraleen and Aravis are in the litter in Tashbaan, when the curtain opens, the light is on. Then when the curtain closes, the light goes out, and the spotlight is on them.
Imagine if Narnia was done in opera style (though most operas are known to be tragic love stories). Maybe the stars in The Magician's Nephew could sing in operatic form.
(......I'm suddenly and sharply reminded of that Last Battle musical I was writing almost 10 years ago. I still remember fractions of a couple of the songs, and somewhere I have two notebooks with notes and sketches and lyrics from it.)
I just thought of that for a musical number in VDT, on the Lone Islands, Caspian and his men could sing a rally cry as they're heading for the slave market to rescue their friends, perhaps similar to "Do You Hear The People Sing" from Les Miserable.
For LB, you could have Shift sing the main melody and Rishda and Ginger harmonize. Then Rishda and Ginger takes over the main melody and Shift harmonize. Then Rishda and Ginger could try to nudge him back to the same melody, given that they're using him like a puppet.
