You can find legends about different gods from cultures all around the world, and in one type of project you could find a way to combine those different gods into a single story collection.
Research Tip: A good place to start is Wikipedia, which has extensive articles on the gods of the world's cultures, and starting with a List of Gods, which is really a list of lists that then takes you to lists for different cultures: Aztec gods, Celtic gods, and on and on.
Past Projects: