Tuna is a sturdy fish that is easy to grill or broil. If you can't find beans labeled "low sodium," compare the Nutrition Facts panels to find the beans with the lowest amount of sodium. Rinsing can help further reduce the sodium level.
Use vegetables in wraps, which hold better than sandwiches if you keep the wrapper flexible and don't overstuff them. The following recipe uses cream cheese and a lettuce leaf to prevent the moist filling from turning the wrapper soggy. Cold wraps usually improve in flavor by sitting in the refrigerator overnight.