College Essay Topic.

^ this. It doesn't need to be huge, it just needs to say something about you. That's the important part.

Also don't talk about some random insignificant crap that happened yesterday and pretend it's a life changing experience. Chances are, they'll see through it. Depending on how much they care.

(Also I'm only reiterating what I've heard... no personal experience here. I've still one more year.)