title_body: Other uses for espresso machines?
upvoted_answer: It may completely be abuse of the machine, but I saw someone clean stainless steel jewelry once in an ECM machine. They put the jewelry in a sealed portafilter basket and backflushed the machine with cleaning detergent.
  
  It seemed to clean the jewelry pretty well, but I can't say if it would be very different from putting it in the dishwasher.
  
  At the very least, it seems to be a way to kill two birds with one stone when backflushing your machine.