If you like the Make Noise formfactor and want to combine with 1U modules, have a look into the Intellijel Performance Case 7U. If you combine with their 1U modules you would have an incredible package as alternative to the MN one (which is awesome in its own way).
What you are looking for is "generative music". Go have a search on that term in your video library of choice...
My personal and straight to the point approach here is Intellijel Plog combined with trigger sources, random CV and/or slowly evolving lfos. In order to make that "interesting" you might want to look into VCAs combined with sequential switches (e.g. the A-151 from Doepfer).
Have a look as well into the Krell Patch construction, "hidden" in the 0-coast manual from Make Noise.
Lastly you need a bad-ass reverb to make it shine or shimmer or walhalla or whatever verbing =)