Final answer:
Sam's poem about Gandalf's fireworks represents a personal and emotionally resonant memory of joy amidst sorrow, reflecting the human tendency to cherish simple, happy moments.
Step-by-step explanation:
The recollection of Gandalf's fireworks in Sam's poem is indicative of the character's fond memories and experiences with Gandalf. Despite Gandalf's immense wisdom and feats, Sam chooses to remember the wondrous and joyous moments represented by the fireworks, which had a personal impact on him and likely the other hobbits. This choice reflects the human tendency to hold onto those memories that bring us happiness and comfort, especially during times of sorrow or lamentation. Such a selection in poetry underscores the significance of personal experience and the emotional resonance of seemingly simple joys amidst a backdrop of larger events and deeper sorrows. Sam’s poem becomes a commemoration not just of Gandalf's grandeur but of the light he brought into their lives, embodying the essence of Gandalf’s spirit.