Only 2 seasons under our belt, and we only use the cheap $0.97 Sterilite 6qt tubs with snapping lids (not locking lids).
No matter your media, just make sure the egg box humidity is >95%. You will see condensation forming in short time when eggs are placed in the box.
We always keep a few tubs "at the ready" with damp media should one of our females surprise us suddenly![]()