Coasters are very useful in any home. They allow you to protect your furniture and they can also be interesting decorative elements, depending on the design you choose. You can also personalize your coasters. And since geometric shapes and quite in vogue now, am going to show you how they look on your coasters.These simple, useful coasters are made out of free materials generally.I have lots of papers on hand and the cardboard is gathered from used boxes, available just about everywhere. Good way to recycle the cardboard.