I went to Dollar Tree + picked up wire drawer dividers. Since I didn't measure I picked up 2 each of the 3 sizes. Only the small square one fit. I put the 9 Ameraucana eggs in it and tied the other one on top of it. But the lid no longer fits tight. I added water and The humidity was 47%. So then taped all around the lid and the humidity is 67%. I removed 3 eggs after candling. I opened them up - no development. I'm glad I made the right choice. I always worry about destroying a living chick. In Lockdown are 8OEs, 7 Marans + 9 Amer. There are 2 more questionable ones. Now to wait.