Watercress, sugar snap peas (blanched) and watercress, French dressing optional.
Picked this up from a Nigella salmon recipe years ago and it's one of my favourites, would go well with steak and chips.
I'd also like a tomato salad (chopped tomatoes, red pepper, light dressing)
Green beans, cooked, drained, French dressing and chopped garlic added while the beans are warm, then left to cook to room temperature.
Finely sliced cucumber with a teaspoon of white wine vinegar and chopped dill, left to marinade for a little while.
I think if you make a salad like one of the above, you can still serve it on a bed of lettuce, with cucumber or tomato if not in the tarted up salad.