Thank you for all the suggestions, the beers never stay in very long at all but we have had some times where one it two have been lost to lid displacement.
Unfortunately the beer of choice is not in cans so that idea is out.
The Tap King looks brilliant and may have too look at that for future.
Liking the idea of simply putting foam on the bottom of the fridge to reduce vibrations.
Now I will have to go have another beer to ponder

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