Include most or all of these to make ideas sticky.
Boil the idea down to it’s essence. The basic principals that make it work.
Spark people’s interest with something unusual. Something counter-intuitive. People will want to discover why.
Make sure people can grasp your idea, draw a vivid picture with real-life things. Metaphor this puppy.
Your idea must be believable, but not with too many facts and figures. It could be put to question.
Appeal to people’s wishes, desires, hopes. Ultimately, people are self interested on some level. Consider Maslow’s Hierarchy Of Needs.
Human brains work in stories.
Maybe rags to riches via obstacles.
Maybe bridging a gap between opposing groups.
Maybe solving a long-standing problem in an interesting way.