A Really Accurate Fridge Thermometer

I don't know where you can get these any more, but check with a pharmacy when you get a chance. When I was getting my insulin via mail-order, they shipped in a very durable, thick foam container. Many times after a two-day delivery, the freeze packs would still be frozen hard. For your critical medicines, having one of these available, and a frozen freezer pack always in the freezer would be a good idea. It would at least get you to a working cooler if you had any type of failure.