European solutions to kitchen space dilemmas. While this fold-up kitchen may look like a rock star's equipment, it's actually a practical way to solve a difficult space problem. HANDOUT PHOTO/CNS Photo courtesy of Topdeq.
Although the tone of the doorbell is not as monotonous as before, it is still different from piano. However, China's designer Li Jianye gives us a piano doorbell. This product has several piano keys which allow the guest to play what ever tone he likes.