Global Illumination may not be the correct term to use here, but I am looking for a lighting solution to produce results similar to those that I have seen in many children's TV series.
Here are few examples:
Octonauts https://img.lum.dolimg.com/v1/images/image_62a69485.jpeg
Pocoyo https://i.ytimg.com/vi/w-K8UIqLRIQ/maxresdefault.jpg

I have considered using Physical Sun and Sky, but I am not sure if this is the best solution to produce results similar to these programs.

Any specific advice on this would be greatly appreciated.