A plastic contraption inside a refrigerator. It forms two levels where eggs can sit on a slight slope. The fresh eggs are inserted at the top front and roll down and around a curved drop at the end, then forward again at the lower end, where the oldest egg can be easily retrieved at the front bottom. A first-in-first-out buffer.
https://f2.tchncs.de/media_attachments/files/113/673/034/251/239/074/original/a5b4b06d22356912.jpg