Very neat experiment! Can't wait to see the outcome!

Another interesting experiment (if one doesn't mind spending the money) is to pack the thermometer inside the box...maybe put it in a snake bag or deli cup that an animal would be in...then ship it overnight to someplace cold. Those particular thermometers will save the max and min temps that it recorded within the last 24 hours. It would be interesting to see if any extreme temps made it into the box, or if the heat pack and insulation were enough to maintain steady, healthy temps.