i found an old module from the quantum noise machine, cut and drilled a eurohack panel and remounted it.
it went from this:
the grey wire sticking out of frame on the first picture is an LDR, we decided to put it to a 3.5mm jack instead of having it hardwired.
i’m not entirely sure what the module is made from (i forgot) and couldn’t be bothered to strip away the magnificent duct-tape isolation job. i think it’s a couple of 4093 oscillators with a 555 timer on top. it has a pretty wide range of chaotic sound.