I mainly create process based applications. From ambient sound or video generators, to music visualizers. I like to put the principles of improvisation into the hands of the machine and see the results unfold. Some projects are short and sweet and finished quickly. Others just grow and grow!
I also make short helper patches and doodles to mess around with different aspects of max or to help me work something out. As when trying to get my head around the thin lense equations to build a projector.