A device must be invented that would work based on electrolysis. This device I would employ in medicine field. I'm not talking about the process and how it should work, but idea is next:

Just imagine that there is no necessity to clone your any viscus or make complicated surgery operations and transplantations. Just applying this device you get new viscus in minutes and no need to spend time in hospital in horizontal position for weeks.

I suggest this device would bring really revolution in the field of medicine and it will be very useful.