Chances are a kitty will jump into it.
Buddy got in there first and then along came Lucy to see what he was up to. Buddy left and got on top of the fridge, sticking his paws into the opening between the door hinges to bat at Lucy. I was afraid all the dishes would come tumbling out if I tried to make them vacate the cupboard, so I just waited until they got bored with it and left of their own accord.
Cats are just so nosy.