Preheat sandwich press. Place a slice of cheese between each of the 2 slices of bread to form a sandwich. Place them into the sandwich press and allow the cheese to melt. (If this is going to be a to-go lunch, still press so as to give the bread a nice golden color, but allow the cheese to cool before packing).
Cut the fruit into smaller pieces and mix together. Peel the carrots; cut the carrots and celery into sticks.
Place each of the lunch ingredients into a lunchbox separately; taking care to keep the sandwich dry.