The way that i come up with new ideas is by just frequently using my decks and handling them. I also take ideas from my friends whenever they play around or try to mock magic as a joke i pay attention closely because you never know what ideas i get. When somebody says "Danilo levitate my pen or move this ball with your mind" the only thing that comes to my mind is, why don't i take this as a challenge and try to come up with a similar idea.