As Ablaut said:
– only one audio path
– as much processing as you want
– no mixer modules
– no polyphony

Well, I really don’t know if it is “very cool” but I like it. I realized only after I uploaded it that you might want to change retail Caudal with free Caudal (it does change nothing in the patch) and you might want to download my Chiptune blank plugin (just for the aesthetic). The rest is absolutely trivial: one VCO driven by a sequencer; the output is fìltered by 6 reverb and 6 delay, each one of them has a state memorized in støermelder 8face each of those state is randomly selected by a Bernoulli gate and slapped on by a strip module. Seriously, nothing fancy here.
The VCO signal is monophonic.
Some eyecandies “just because”… :-)