For those times when I am able to connect to shore power I was thinking I would purchase one of those little Dormitory fridges. At $25.00 and most likely only a year old they can easily be found in thrift shops shortly after the colleges close for the summer. Finding one was not a problem. Fitting one is. The Cabinet under the stove has an opening of 17.5" wide, and 19"deep. While it is possible to find a 17.5"wide little fridge the one I found, you guessed it, is 18.5" wide. Sure it is easy to trim the opening, but what is not so easy is making a new, matching cabinet door. So for this coming trip I will set the fridge outside and secure the door with bungee. Hopefully a hungry bear won't decide to just take the whole thing.
UPDATE: Well it worked out fine, almost. I pre-chilled the little fridge at home and then set it inside my Tow Vehicle and plugged it into a 400W inverter. It did not keep its cool. Plugging it in at the campground however re-chilled it in an hour or so.