Original design from @YamahaRider_168128 was great, but I found it a bit crammed when filling with large size eggs from the store.  The varying sizes of eggs led to all of the eggs touching each other and some not sitting all the way down in their slot.  I was unable to stack 2 racks since some eggs would stick up a tiny bit too high and the rack above would sit on them.

I added 5mm to the X and Y axis in order to leave a small gap in between eggs, and 7mm to the Z axis in order to give plenty of clearance between the top of the eggs and the rack stacked above.