This is a garden shed. You can see my 'expensive' and 'safe' electricity source (the yellow extension cord coming out of a buried PVC pipe and going in the door).
Vinyl strips over the door. They come out whenever the wooden door is open, even in the dead of winter.
the big picture.
Inside there's rubber horse stall mat on the floor, and I added a few cinder blocks and a short roof to make them feel more secure. There's a small pig blanket on the floor under the lid and a 250 watt red brooder light that comes on at night.