Let’s quickly review the three basic types of containers used for collecting eggs: wire egg baskets, galvanized buckets, and plastic buckets, and why you’re probably using the wrong one.
You could probably find something worse than a plastic bucket, but I don’t know what it would be.
Plastic buckets have flat bottoms, allowing the eggs to roll around freely, cracking each other. The bottoms are solid, so if you acquire some rainwater, or some eggs break, you get a yucky pool at the bottom of the bucket, dirtying up all the eggs on the bottom row. This is especially bad if the eggs sit in the bucket for hours or overnight before being washed or packed.