Ive done this before when raising baby parakeets, parrots, etc. I have one of those medium size reptile rocks that plug in and create surface heat for reptiles. I put it in one of my socks and put it under or near the heat light in my brooder. The chicks seem to snuggle up to it when they need to, play king of the hill on it, and I find that here in central louisiana the temp can change quite a bit in a short time period it helps the chicks out. I work 12 hr night shifts and dont have central air/ heat. It was around 78 in the room with the bator and brooder, when i left at 4pm yesterday, and now its around 65. The bator is fine, adjusting accordingly, but no one is here to raise/ lower the light. it was 94 in the hot spot of the brooder when i left and now its 90, but all the babies are happily passed out on the "sock mama"!..... just wondering if anyone else does the same.