Here is a smart cat box that helps you take good care of newborn kittens. The WIONBE Intelligent Kitten Incubator comes with a hygrometer, thermometer, and two-way door. It has a digital thermostat and 75w light bulb to provide heat.
This kit ships with an incubator, cat bed, heating lamp, and light. It measures 19.6 x 27.5 x 15.7 inches. You can find out more about it here.