Being able to find a new and interesting place to put an ad is getting harder and harder. It seems every nook and cranny in the public world has become a canvas and people are challenged with finding unexpected places to use as media.
This link is pretty cool. A young designer has searched the web for what he thinks is great advertising and among them are some smart uses of both media spots you've seen before (shopping bags, bus wraps, outdoor) and some that you haven't. The beer cans on the subway bars is a personal favorite.
Check it out.