1 For the sandwiches: Thinly slice the baguette. Peel the cucumber and cut into thin slices. In a bowl, blend the cream cheese with the creme fraiche until smooth. Season with salt to taste.
2 Place half the baguette slices on a work surface. Spread with the cream cheese mixture and top with the cucumber slices. Place the remaining baguette slices on top. Pipe eyes and mouths on top of the sandwiches with mayonnaise.
3 Place the ketchup in a freezer bag and cut a corner. Trace the mayonnaise eyes and mouth with the ketchup.
4 Rinse and halve the tomatoes. Place 1 on each sandwich for the noses. Use the parsley and chives to create hair on the sandwiches.