Hi, I will be providing heat for my poultry. A few questions. What is a way that doesn't require cords? Can I use a flashlight (that the plastic or glass gets hot after a while, maybe gives off heat) for a small amount of poultry to provide heat, if it is orange? Who has tried heated water bottles? How well do these stay warm? And, with electricity, can you use a regular lamp (60w) to provide heat or do you need a heat lamp? Lights give off heat eventually, right?