the Easiest Homemade Door Sweep
We like to leave the windows open in our bedroom during the cool months but don’t want that cool air invading the rest of the house. This is the easiest door sweep, and it seals just fine.
Buy one of those tubular pool toys, cut it to the width of the door between the stops, and cut a slit down the middle. Then just slide it onto the door. Easy on and off. And they are available in many colours.