This is not modeling but I would appreciate your comments. It is a study on a fast and cheap pseudo volume-rendering technique for very sparse points sets. The image corresponds to a small sub-box (3 million light years side) cut from a large cosmological simulation. The bright blobs are dark matter halos where galaxies are expected to form. This is an extreme example of a poorly sampled density field but nevertheless produces beautiful images. Blender on python is the ideal tool for artistic scientific visualization.
Let me know what you think!