Point your camera at buildings and have it go back in time/ use it as a journey planner where it will block out all the other buildings and highlight the relevant destination as a beacon with footsteps on the ground to show you the way to get there and the time it takes. this could work at tube stations too, to show you the path to the exit/ tube line. This is helpful to tourists from other countries so it could be viewed in their language.
point your camera at a book and have it come to life through paper sculptures and book cut outs along with the audiobook version playing to tell the story
use the poster advertising the book or the cover image of the book so you scan the front