Very creative, carved fruit pits.

Haydao, the art of making seeds from fruits in the art. Haydao originated during the Song Dynasty (960-1279) in China, but during the Ming Dynasty (1368-1644) became the most popular form of art. The most senior person in the state were similar decorations.
Often all used peach pits, peach as synonymous with saving in Chinese culture. Given that each stone is unique, so cutting out complex shapes requires considerable years of training and patience!