Square Root Industries has been creating these whimsical 3d patterns from a sheet of steel.
Set on a wood or leather top and covered with tempered glass, they make interesting artistic coffee tables. There are many nature-inspired patterns cut either in raw or powder coated steel to choose from: tree roots, flowers, animals and birds.
Or choose your own custom patterns. The table frame is also steel, powder coated. Buy these whimsical coffee tables at Etsy.