While we live in an AI-saturated world, your collage represents the wonder of human inspiration. All of those items fell into place somewhere in your mind. It may have begun as a plan, but, as you say,
I hoped they would make perfect placeholders for Christmas items
What was it that made them perfect? What was it that led you to feel satisfied with the way things worked out? In that is the essence of human creativity. There is a sense, a 'feeling'. That's what we share when we look at your collage. A shared feeling of a shared culture, of shared memories, of shared history.
AI will never have that.