Do you have an out of the way window that allows cold air to seep inside? Try covering it with bubble wrap. This is a technique that is simple to do, and helps keep the inside of your home warm and cozy. The bubble wrap will stay for a long time, is easily removed, and won’t harm the window. Try it. Cut the bubble wrap to fit your window, spray the bubble side with water, and press it against your window. Simple way to insulate and warm up your home in cold winter weather. It pulls right off in spring.