Containers.
Yes a good idea, especially if you could locate an old truck trailer pantec (spelling?) which was refrigerated. Then you would simply plug in the old freezer unit but at a higher temperature. I have seen types which are simply bolted onto their running chassis, it would only be a simple job to unbolt it, lift it off, and possibly sell the trailer chassis and wheels to someone else.
You could paint trees on the side of it.
The best part is that the good sealing doors would keep the pesky squirrels outa the way.
Not to mention the narrow aperture.
People out here - like contractors - buy them and mod them to make mobile chuck wagons, they come up "real beaut", to use a southern idiom.