Spread bread with mustard; layer with ham, cheese, and pickles, forming 4 sandwiches.
Spread the outsides of each sandwich with butter; place into a hot sandwich press until bread is golden and cheese is melted. (Allow to cool before packing into a lunchbox).
Peel carrots and cut into sticks, along with celery.
Serve each sandwich with carrots, celery, and bananas on the side. Include a bit of ranch dressing for dipping.