Common App Essay Prompts?

I was just wondering what topics are not really faved by college admissions for the common app essay? I am heavily involved with the Special Olympics community in my town and was planning on writing about that, however, I do not want to write an essay that may be seen as generic or very common. Any thoughts/suggestions and writing tips would be much appreciated!

Admission officers see a lot of the same essays over and over. Basically, what they are looking for is a unique essay specifically addressing your growth and development.

This article has a few essay topics that are too common in admissions: http://www.fastweb.com/college-search/articles/college-admissions-essay-topics-to-avoid