Bonsai?

This is a creation of my friend Phil (again!) - he rescued this unloved cactus from an event in the park recently (it hadn't sold, and was about to be binned), and had the idea of planting it in a bonsai dish, with this mossy rock. There are an almost infinitive number of ways of photographing and processing it - in fact it would probably be possible to do a year's Blips of it!