What are the causes of clashes between the different groups on your worlds (there's bound to be some)?
What is technology on your fictional world (even in a magical one, there's bound to be developments that improve spells, crystal balls etc) and does everyone have access to it?
Is daily life a reasonably pleasant one for most of your peoples or is it a hard slog? What are the reasons for the latter if that's the case? (People could be deliberately kept downtrodden so rebellion is never a possiblity).
Answer at least some of these questions and not only will you generate stories, your tales will have depth to them as you will be looking at the "why" behind how things are on your fictional world.