Tub with tight fitting lid, no holes, no press-n-seal, Hatch-Rite as a medium. Cut a couple small slots for the probe and thermometer wires. Open the tub once a week to check eggs and clear condensation from tub lid.
http://i15.photobucket.com/albums/a3...20/eggbox1.jpg
http://i15.photobucket.com/albums/a386/sho220/eggs1.jpg