business card - I love this one. The reverse (A) reminds of me an Ace playing card and the front is like a typewritten library card catalog. ATX -- looks like newsprint a little bit, good idea for a newspaper business card?
Self promotion idea. OK - no beatng around the bush - this is a serious portfolio - but this may be your competition - so what you may lack in money for a portfolio - make up for it in creativity - see all my suggestions on my Self Promotion Idea Board.