Domestic life grew less formal over the course of the century and more flexible living spaces developed as a result. Women were likely to have careers as well as being mothers and housewives and homes needed to be easy to clean and convenient. Open-plan living spaces emerged in the 1930s, and by the end of the century the kitchen was changing from being a separate workspace to being an integral part of the living room and increasingly the centre of family life. Televisions and music systems superceded the radios and pianos of the first half of the century. People continued to entertain friends at home, but there were also greatly increased opportunities for leisure activities elsewhere, for example in cinemas and restaurants.