Some visual research into existing animations containing refrigerators.
ふりっじす Fridges (Short Animation Movie)
A tale of abandoned fridges with some cute animations - though I think I'll avoid the hands and feet as it removes the challenge of bringing an object alive with character.
Mr Bean - Fly in the fridge
A classic clip from Mr Bean involving a scene with a fridge.
While these have great little stories, I intend to focus predominately on the object itself so as to not get bogged down with an overly complicated story arc and background elements. Although, the addition of a character or environment could be a good opportunity for the main object of the refrigerator to interact with.