You should check out Peter Kreeft’s fictional masterpiece, An Ocean Full of Angels. It’s full of whim and depth and creativity and might provide some inspiration for your own book. Just read Peter’s own synopsis:
“When people hear that I wrote a “novel” and ask what it is about, I tell them (1) that it’s not a novel and (2) that it’s about an angel’s-eye view of the connections between Jesus Christ, Muhammad, dead Vikings, sassy Black feminists, Dutch Calvinist seminarians, very large Mother-substitutes, armless nature-mystics, Caribbean rubber dancers, the Wandering Jew, angels in disguise, three popes in one year, Cortez, Romeo and Juliet, the sea serpent, our Lady of Guadalupe, the demon Hurricano, islam in the art of body surfing, the universal fate wave theory, the Palestinian intifadah, the fatal beauty of the sea, dreams of Jungian archetypes, the dooms of the Boston Red Sox, the abortion wars, the Great Blizzard of ’78, the wisdom of the ‘handicapped,’ the ecumenical jihad, the psychology of suicide, and the end of the world. But that’s an oversimplification.”
Peter Kreeft is awesome.