I can't recall where I came across this idea but how about fridge shelves that (like mini moving sidewalks) slowly move food towards an edge to drop to a lower

I can't recall where I came across this idea but how about fridge shelves that (like mini moving sidewalks) slowly move food towards an edge to drop to a lower shelf and eventually to a composter or trash -- the idea being to put food items at a certain spot on a given shelf based on items' expiration date. Wildly impractical IRL, but clever enough to be memorable (for me anyway).