I made the Pot Bator. An old metal crock pot(non electric) that was wrapped in bubble wrap for insulation and heated with an incandescant lightbulb. The humidity comes from an cup of water in the center of the pot. The eggs are placed in the bottom. I hatched several chicks and ducklings in it, too!
I love seeing all the inventive ways people make a working incubator. I have long days ahead of me for a while though, and wouldn't be around to turn the eggs more then twice a day as best...