If you make potato salad but your "kids" or others don't like mayo try substituting the mayo with vanilla yogurt! My mother used to do this for me when I was in the "weight loss mode"! It was great!
I am not sure everyone would like the sweetness of the vanilla yogurt, but I have used plain yogurt in place of mayo in many places, especially in 7 layer salad. I use vanilla yogurt in Waldorf salad with apples, celery and toasted walnuts. Yummy! Low in fat and calories and very tasty.