When I was a kid in the 80s as many kids did back then (and today) I hung out at the mall and loitered about the Radio Shack and other stores.
During xmas time to showcase their computers they would play a Christmas animation. The only thing I can remember about it was a model train inside a house, snowing outside a window and a Xmas tree. It lasted about 30 seconds to a minute and it continuously looped. You wouldn’t believe how perplexed I was at this. I knew I wanted a computer right then after watching this cool animation.
Very sparse details but maybe it rings a Xmas bell for somebody.