Highly recomend https://syntherjack.net/make-some-pink-noise-generator/ https://syntherjack.net/make-some-pink-noise-generator/ which gives four different circ

Highly recomend https://syntherjack.net/make-some-pink-noise-generator/ https://syntherjack.net/make-some-pink-noise-generator/ which gives four different circuits, they each have their own sound. yes, they are pink, not brown, but pipe the output through a spare opamp configured as a low-pass filter and you can have "any color you like". Then pipe that through a low-pass gate and you start to get some interesting bloops, and before you know it you are full-time building Eurorack modules.