Hi, my daughter has been given a Guinea pig on Friday, from friends whose children had lost interest in him. He has been living in their kitchen, but we really don't have space for him indoors. I set up his cage and run in our garage, but took pity on him after a few hours as it was so cold on Friday and brought him indoors. He is currently in a cage in my daughters room, in the middle of the floor as there's nowhere else he can go, but we can't keep him there. My question is how best to keep him warm in the garage? I have a heat plate that we had to keep chicks warm in the Spring, which i could set up so he could go under it, any other suggestions?