I did find something rather cool while importing all my photos from the trip in picasa though. Using the collage feature and selecting the multiple exposure some nice abstract almost marble-like textures can be made. It might take a bit of playing around with what pictures to use, and it needs a fair few images but you can quickly end up with the sort of thing that web designers probably spend a while producing. Here’s a nice image I ended up with after a couple of minutes of playing: