I wrote mine not too long ago and remember the frustration of trying to come up with a situation that is at once meaningful, complementary, informative, and impactful. I brainstormed with my family a lot; they were familiar with my experiences (duh) and could see the value in events that passed over my head. When you find the right moment, it’ll be obvious to you! I personally think essays based on community service have the most potential, but it all depends on your creativity.