A Walk in the Woods.

In addition to all the other things it does, the iPhone really is a useful camera.  Here's a little demo of it's macro capablity.
I've probably quoted the old photographers mantra 'f8 and be there' on this blog once or twice; meaning that the key to a good photo is to set the camera at f8 and to actually be on hand to taked the photo.  The iPhone doesn't fuss with things like f-stop setting but it's portability means that it is ever-present should a photo op present itself.
Square crop and levels adjustment made in Photoshop CS5.