Street art site Wooster Collective spotted some chalk drawings in New York, and received similar images from a reader in Philadelphia, that are ads for Sony’s PSP. The images contain no words, no logos and no product references. It’s just a bunch of kids playing with the PSP as if it were a skateboard, puppet, paddle or ice cream bar. The images are intriguing enough to cause attention, at least in our opinion, causing the viewer to realize the thing in the ad is, in fact, a PSP. Good stuff.