A mat can be made of any materials, even of wood. But of rocks? Yes, it can! You’ll need many river rocks, the best way is to take similar flat and thin rocks, they should match their thickness; a doormat, some glue and an exacto knife. First make the shape of the mat you like, then arrange the rocks to understand how they should be laid out. The closer you put them – the better. Now use glue and let dry. Use the shapes you like and you can also make a trivet or any stand for anything. The piece is stylish, very simple and so natural!