I would start with three sets of poker chips stacked up in small, medium, and large stacks.
Then I would explain that some people might think that the honor accorded to good people (like your mother and father), compared to Mary, compared to God, corresponds to the small, medium, and large stacks.
I would then say "But that's wrong!"
Then I would combine all the stacks into one, and say that represents the honor accorded to all God's creatures (including your mom and dad); and the honor accorded to God is (here I would raise my hand up, up, up) is so high it would go through the ceiling and the roof, and up above the clouds, and then up to the moon (depending on how much the child knows about the dimensions of the Universe) and then so high nobody could reach it, because the honor of God is infinite.
An important vocabulary word: infinite.
So the honor we properly give to human persons ("honor to whom honor is due") cannot even be compared to God; because even the top person GOD told us to honor (as in "Honor thy Father and thy Mother") is way, way way below the honor we give to God Himself.
I might put one poker chip on top of the "human honor" stack and explain that for most little children, their mother is the top-honor person, but since Jesus' Mother is someone He greatly honored, let's put her on top.
Because God blessed her above all women. Even above Wonder Woman and Melania Trump.
In your ‘other religion’ the titles given to the Mary of your religion nullify your specious claim. It is not surprising that you are unable to ‘see’ that for spiritual things are discerned by the spirit, THE ALIVE spirit.
“Then I would combine all the stacks into one, and say that represents the honor accorded to all God’s creatures (including your mom and dad); and the honor accorded to God is (here I would raise my hand up, up, up) is so high it would go through the ceiling and the roof, and up above the clouds, and then up to the moon (depending on how much the child knows about the dimensions of the Universe) and then so high nobody could reach it, because the honor of God is infinite.”
To me in practice though it seems like Catholics give Mary close to if not the same honor they give to God. From the link I posted:
“Mary is so good. She’s all-loving; she’s all-tender. When you spend time with her and talk to her, pray to her, she has a way of bringing joy and goodness and taking away the sadness.”