My idea for a smart fridge..
The only smart bit of a smart fridge for me would be to work out if the fridge is cold enough to wait until the 'leccy is cheap ( yes this relies on smart infrastructure too) in order to cool down to balance the power grid.
I'd also like zones of various coolness, so 2-3 C for meat etc, and proper cellar temperature for beer without having to resort to a second fridge.
Beer because obvs