Great ideas everyone!
And don't forget the Green Mist that was defeated in the infamous Voyage movie can be harnessed in The Silver chair, that will now be demoted to a housecleaning product to scrub sinks. Then the climactic scene in which the Lady of the Green Kirtle tries to re-enchant the children and Caspian and Puddleglum, can produce all this green mist, and it is actually the Green Mist that is responsible for exfoliating the black off of Rilian's armor and shield revealing a Rampnt Lion.