I dont have any other ideas for salads but maybe try and experiment with dressings to change it a bit... I have a pasta salad that is sooooo yummy i know full of carbs but yum for the odd occasion..

Any sorta of pasta (i use tie ones or small tube) as much as you need
3 sticks of celery sliced
1 capsicum diced
bunch of spring onions sliced
Sour cream large spoonful more if you like
Whole egg mayo again large spoonful more if required to coat all the pasta...

I cook pasta and add everything when its still hot then pop it into the fridge yummy yummy yummy..