3 people, 2 days, 1 ridiculous idea
There is no sadder sight in this world than a mug of tea left abandoned; neglected as its owner buys milk. If only they’d known how much milk remained before starting the tea-making. The onerous task of opening up the fridge to manually inspect the milk far too daunting to be considered, one might begin to think there should be another way to know how much milk was in the fridge, in real-time.
Thus the low-milk-early-warning-detection system was born. And they called it “Got Milk”.