We saw the Milkmaid a while ago. It is a smart milk jug that tells you when your milk is spoiled, so you won’t have to taste it a bit to find out. It has pH sensors that tell you when your milk has gone bad. The weight sensor tells you how many cups you have left. The temperature sensor tells you if your milk has been out for too long. The good news? You can access all the relevant information on your iPhone using the free companion app. A pretty innovative product to keep track of your milk with.