30. Keep Your House Warm
If you have regulated air conditioning, there might be ceiling registers in your home. They help to eliminate the warm atmosphere that emerges at the top of the room. Nevertheless, in the winter, they have an open path for colling air that comes in and chill your home. You can tuck it into the bud by buying some transparent plastic dishes that you use under the flowerpot to collect excess water. Add a bit of removable weather to attach them to the ceiling on the registers temporarily, and your home will become warm this winter.
