Ergonomics is the study of designing equipment and devices that fit the human body, its movements, and its cognitive abilities. 
The International Ergonomics Association defines ergonomics as follows:
    Ergonomics (or human factors) is the scientific discipline concerned with the understanding of interactions among humans and other elements of a system, and the profession that applies theory, principles, data and methods to design in order to optimize human well-being and overall system performance.
(Source: wiki)

Similar to workplace ergonomics, home ergonomics is the science and study of designing tools and furniture which are ideal for home occupants in order to optimize their well-being and overall performance.

Thus, here are a few ergonomic designs which you can consider:
Application of ergonomic should not stop once we leave our workplace. In fact, we should pay close attention to such so that we can improve our well-being and overall performance. :)