I don’t, but I feel like you could as long as it wasn’t too ‘wet’? But I also like the variety of having something different each day, I’d get bored of the same thing, so like to build the salad differently each day.
Each night before work I put a few big handfuls of lettuce from the ice cream tub in my salad lunch box thing, along with something crunchy/crispy (radishes or carrots), a few chopped up cherry tomatoes, and then almost always raw sweetcorn that I just cut off the cob, YUM. Then I add a protein - leftover chicken from dinner the night before, or hard boiled eggs, or a tin of tuna. Tomorrow will be leftover Indian chicken kebabs I made on Saturday night. Generous salt and pepper over everything. My lunchbox has a little dressing pot that I just put some olive oil and sometimes lemon juice in (or if I’m having egg in my salad, some truffle oil - it is INCREDIBLE and makes it feel so fancy.) Just grab from the fridge in the morning and away you go.
I’ve learned that the secrets of a good salad you actually want to eat and will keep you full are:
Chopping everything up small so that you can actually get different things on your fork at once - a mouthful of just lettuce is sad
Vegetables you’re actually excited about and want to eat (roast veg, corn, radishes, etc - no cucumber for me as I hate it. Don’t forget the possibility of fruit, too! Blueberries are really good in a salad, as is cubed mango)
A protein that you like and is tasty (leftover roast meat, feta, goat’s cheese, salmon, tuna, hard boiled eggs with a slightly jammy yolk)
Plenty of seasoning (a salad without salt is a crime)
Some fats (plain olive oil is usually enough for me, and it brings it all together, but flavoured oils are a really easy way to ring the changes and make it taste like a restaurant salad)
Carbs (I don’t find I need it, and am trying to lose some weight at the moment so avoid, but if you’re worried your salad isn’t filling enough, you could add some cous cous, quinoa, or some other grain to bulk it out)
Textures (wet and limp salad is grim. The key is crunch. Chopped nuts can be good!)
Sorry the essay, I’ve just been totally converted to salad life for the last month!