Instead of buying a mat that makes everyone feel warm, cozy and welcome. You could buy a mat that makes them squirm before they ever get through the door. You’re probably thinking only the truly amazingly talented could possibly make guests squirm before they’ve even entered your home. However, even a beginner can pull this one off. All you’ll need is this doormat. This one looks like a normal mat with the exception that it has a scale within it. It measures their weight in kilos. Finally, you’ll know how much every last one of your friends weighs.