Hi There,
I'm a big fan of ubu.com mainly the experimental sounds that can be found there, for example Olivier Messiaen - Oraison as part of a history of electronic sound.
I've always been on the lookout for how to recreate these kinds of sounds - I find them good for programming. The flow below is kind of inspired by moog synthesizers - where wires are very much real!
What I have done is use the ClientCode node to create oscillators in the browser (using the AudioContext API) and have them being displayed insider a canvas element under the node on the workspace.
In addition, delay nodes cause a certain amount of fluctuation in the sound but not much. A join counter is used to create the loop. Of course, I could have created the same using noisecraft but that would have been smart. The whole thing only works in the browser, there is an set of SuperCollider nodes for server-side sound creation.

The flow is too large to be posted here and it can also be tried out in browser-only node-red.