Here's a project I did a year or so ago for school. We had to come two found objects, and alter the surface of one of them. I found a suitcase at salvation army thrift store, and collected several prescription bottles. I spray painted the surface of the suitcase, and covered the whole thing with rhinestones!!! I'm not sure how many were exactly used, but it was definitely over 200. It took a long time, but it was definitely worth it. I think Paris Hilton would be jealous.