Tuna salad on "Sandwich Thins" bread or Ezekiel bread
Use tuna packed in water (NEVER use the tuna packed in oil--YUCK!!) Drain and add plain Greek yogurt (instead of mayo) and a little pickle juice and a few diced sweet Gherkins. Add diced celery if you like a little crunch.
You can also do this for egg salad with diced hard boiled eggs instead of the tuna.
You can also put Greek yogurt instead of mayo in your favorite deviled egg recipe. It cuts the calories way down and makes a yummy snack.