If you can't find an old bread box why not use an old potato box? I found this one at a thrift shop for $8. We cut out a place in the lid and routed a channel so that a pane of glass can be inserted for observation. The glass is out now because the glare from my kitchen lights made it impossible to see inside. The light is wired in the bottom part of the box where the little drawer is. The thermostat is wired in the compartment where the eggs will rest. A water wiggler, thermometer/hydrometer and the set up is complete and ready to regulate the heat. For those who are still unsure about the wiring I made a photo of how the wiring is completed. I cannot explain any better than I have in the other two incubator posts so maybe looking at this photo will help take away the rest of the mystery. For those who have questioned the water wiggler. This is a digital thermometer/hydrometer with a probe and a water wiggler. The probe on the thermometer is threaded into the water wiggler and placed along side the eggs. The temperature on the inside mimics the temperature of the inside of the eggs. The ideal hatching temperature inside the egg is 99.5 degrees F. Use this setting of 99.5F to regulate your thermostat to turn on and off the light bulb to maintain the correct heat. Good luck to all of you who are inspired to build your own incubator. My other incubators: Chic Chick Bator - Bread Box Incubator I want to update this to add for those who said they couldn't find the thermostat - http://www.lowes.com/lowes/lkn?action=productDetail&productId=26359-000000135-6900824&lpage=none American Water Heater Thermostat Lower for Double Element Heaters Item #: 26359 Model: 6900824 It is available at Lowes. Look in the area where the hot water heaters are sold. They should be on a shelf nearby.