Is this called “Resource Utilization?”
One night, my friend and I were alone in our house. There was a power cut all of a sudden and we were in the middle of our dinner. It was pitch-dark and then we realized that we forgot to buy a new set of candles after the stock was over in our house. In hunger & in half way thru dinner, found it so disgusting without light. Then an idea struck. Brilliant idea I would say ;-) Had my laptop in sleep mode nearby. We turned it on and had “Laptop light” dinner. It was good though not so good a romantic “candle light” dinner would have been :)