I only use one cup - That is my 'worlds greatest mummy" cup. it's white with pink writing, and it's big so i get a noice hit of caffine in the morning... And everyone knows it's my cup, when my friends come over for coffee they even go and search for 'my cup' so not to get the wrong one :-)
I really can't wait if/until I get one of the mummy cups from DD! I used to think it was cheesy but now I see it from a mother's perspective! I think I might be the same if I get one!