There's no shortcut, the good ones come when they want to. Sometimes the good idea is just to set a pace and not wait for good ideas. You gain some momentum and ideas form along the way.
If there is one real trick, it's not so much a trick at all, it's science. First, you need to establish a baseline. Think of 100 ideas. Think of so many ideas that you become bored with them, to where they all blur together in their nondescript averageness. Now do that again. You are calibrated. Now every dumb thing you think of doesn't burst with dopamine from the sheer accomplishment of creating something that works. Stage 1 complete.
Now that you are jaded, keep thinking of ideas, every day. One day, you'll think of an idea and say, "this one feels special". You'll start working on it, and discover that it was good, but better in theory than practice. You still like the idea, but are mature enough to throw it away because it doesn't work well from all angles. Stage 2 complete.
A year later, you think of another good idea, you don't get quite as excited about it as the one from a year ago, but when you put this idea through the paces, it really starts to work. In fact, it's actually getting traction faster than the idea you were more excited about. As you write the chapters, the characters take on a life of their own, you are reading your own book, writing that next chapter because you want to find out what happens next.
That one, that's the good creative idea.
Same for music, same for film. Get past your own dopamine distortion, then put in the work to field test. That alone will improve your culling process. Spend 1000 hours on a project and realize it's a failure , and you'll remember that pain and select your next big idea more carefully, and with more experience and context. After gaining some experience, you'll find that you start getting a lot more ideas that actually work out in practice.