An IOT device i know of is a smart refrigerator. they have cameras inside of they and they can scan foods and tell you if its expired or not and it can also direct you were ever you need to go to shop for food online.
(*A smart refrigerator is one that's connected to the cloud. Depending on the features built into the fridge, it lets you do such things as use your smartphone to see what's inside; send and receive notes and calendar entries that will appear on the fridge's screen; and even get alerts if the refrigerator's door is left open.*) <info from tomsguide.com>