I have never set eggs in an incubator, so my knowledge is pretty thin in this area. However, I keep reading about people who lose their power and their temps go down before the power goes back on. I just had a thought...could you use those hand warmer things to keep it warm in the incubator while waiting on the power? I have seen them in a larger size that you could put next to your body inside your shirt, these would put out more heat than the smaller hand size...could that possibly work? There are also those heat pad things you can buy in the Pharmacy that is for your back or shoulders that work on the same principle. You could buy some of those before you start incubation...just in case. Any opinions? Has anyone ever tried it?