Oooh! Someone (tls_ranch) just posted on the Northern California thread about how they use the clear plastic grape or strawberry containers to separate staggered hatches, or different breeding lines. She lines the bottom with a shelf liner and puts the hatching eggs in. When they have all hatched, she just picks up the whole container and the incubator is ready for the next hatch. No mess to clean up! The big grape containers from Costco hold 12 eggs, with room for a few more. I have a 2# strawberry container that I think I'll use to put my BCM eggs that aren't very high quality. Keep them away from my good ones so I know which is which.
Ok, I just checked out the Costco grape container in my fridge, I think it will fit If I take the top off.