Idea: keeping fridge doors propped open during storage

I try to get my Class C within two degrees of level both ways when it's in storage, but, because of how our yard slants, it's most often nose down within that range.

Our fridge has little catches on the fridge and freezer door that keep the doors very slightly open to foster air circulation, but it's not much, and I worry about mold development; so I prefer to keep the doors wide open. Trouble is, when Madame Itasca is nose down, the doors tend to close.

There's a pantry cabinet just aft of the fridge in our rig, so I took a couple of small plastic bottles (mine were left over from chemicals for our hot tub, about 3/4" diameter and 2" long, soft plastic); drilled a hole in the caps to accept what the hardware store calls "tactical cord," basically heavy duty twine; filled the bottles with some metal scrap; and I had a door retainer.

I open the pantry door, put one bottle in the pantry with the cord over the top of the door, then close the door. I then open the freezer and fridge doors and run the line over them (down in front of them, in other words), leaving the other bottle hanging below the two doors. It works quite well.