This woman has a brilliant tip for when you leave home for a couple of days. In her case it was because Hurricane Mathew. So she shared this post with her friends that were also evacuated, but it is a tip that anybody can use...
You know when you leave home for a couple of days and you come back and there was a power outage. This idea will will ease your mind about whether or not the food in your freezer is good to eat - or best be thrown out right away. here's from her post
"You put a cup of water in your freezer. Freeze it solid and then put a quarter on top of it and leave it in your freezer. That way when you come back after you've been gone for a while you can tell if your food went completely bad and just refroze or if it stayed Frozen while you were gone. If the quarter has fallen to the bottom of the cup that means all the food defrosted and you should throw it out."