Fun fact: Alongside references to "Romeo and Juliet", "Cinderella", and "The Boy Who Cried Wolf", I want to highlight two other story references, since I feel like these might not be as well known (at least, I didn't catch these ones until I was working on this page).
"They say happiness comes in small packages" is a reference to the story "The Tongue-Cut Sparrow". In it, a man finds an injured sparrow and brings it home to feed it and help it recover, though his wife is upset about wasting food on such an insignificant thing. One day, the man goes to the mountains and leaves the sparrow with his wife, who refuses to feed it, and when it eats some starch that was left out while she was away, she cuts out its tongue and releases it to the mountains. The man goes to find it when he finds out, and when he does and is welcomed by the other sparrows, he is given the choice of a small or large package, and he chooses the small one, which he finds is full of treasures when he returns home. His wife then goes to the mountains to retrieve the large package, but when she opens it, its instead full of deadly creatures. Though honestly I think that reference is a little lost in this translation, as I have seen other translations that specifically make reference to a small and large box.
"The axe I dropped was one of gold" might be a reference to "The Honest Woodcutter" (or any of its variants). In it, a Woodcutter drops his axe into a lake, and the god Hermes dives into the lake and brings him a golden axe, asking if it was his. The Woodcutter says no, and this repeats with a silver axe. When Hermes brings the axe he actually dropped and the Woodcutter accepts it, he is given all three axes as a reward for his honesty.