Take a large, circular cookie cutter and cut a circle from a slice of bread for the body. Using a smaller cutter, make another circle for the head. Use butter and your sandwich filling to stick these pieces together.
From the leftover bread, cut two small ears and a smaller oval shape for the snout. Cut the same shapes from a piece of ham and lay on top of the bread to fit the shapes of the ears and nose.
To make the nostrils, push two holes right through the ham and bread of the snout using a small cutter or chopstick.
Place some cucumber skin beneath the nostrils under the bread and ham nose. You should be able to see the dark skin through the nostril holes.
Finish off by making some eyes from discs of cheese and cucumber and finish with a carrot twist for the tail.