step by step fridge to reptile incubator conversion, I think this could be easily done for Chicken or Quail eggs, I may look into this and add Led Lights to it. Think the hard part is going to be finding the mini fridge .
This article is an example of how an incubator can be simply made by using an inoperable compact refrigerator. It is by no means the only method. I highly recommend using a good quality thermostat as opposed to a rheostat for your temperature controller.