I would only send the required materials asked for on the supplemental application: basically, just answer the questions and send letters of recs in.
Other materials would probably be best sent after an interview, or even better, if you're waitlisted.
But, I don't think it's a good idea to put in a resume, newspaper articles about yourself, etc. I guess it just depends what you had in mind, but it's usually best to just give em what they want and nothing more.