Switching on an old melitta coffee maker and letting it work for about three minutes until it finishes. Switch on / hiss / dripping / gurgling / switch off.
What you hear is the sound of an old mystic engine, or something else, i donßt know. I made it with audacity. Use it if you want, you don´t have to ask me to. But i would be nice if you tell me, that you used it in something.