In this recipe, potato salad and tuna salad are combined into one satisfying meal. They make a popular and quick-fix lunchbox salad which is a great way to relieve school lunch sandwich boredom and can be a great start to the week when fresh bread is not readily available. For the light eaters, serve with a wholemeal roll spread sparingly with polyunsaturated margarine or butter. To make a more creative lunchbox, serve with delicious pinwheel sandwiches. These sushi sandwiches look fancy, but are easy to make and fun to eat. The best part is all these can be made ahead of time.