The nekos look pretty much the same in all the stockings/socks. Either their paws are sticking out or not.
They look the same in all the pails/pots.
The normal cats sleep in the earthenware pot, aluminium bowl, aluminium pot and fruit basket in the same way.
You should get:
Special items: earthenware pot (Nabeneko San / Chairman Meow)
1 sock, 1 pail