Inspiration is found from a familiar object again–and again, and again.

Sometimes the people who didn’t matter to us come back to haunt us.

Not all enemies will kill you outright; some will take you alive.  How can they do this, and why, and what happens after that?

Your antagonists have to be able to plan to some degree, but also to improvise, and you have to remember that they aren’t unlimited in what they can do even when you as the referee are.