Can't be doing with salads at the moment, but these are my favourites for when I do:
Cobb salad (basically whatever you want in it, but I'd say (all chopped so easy to mix) lettuce, tomato, hard boiled egg, blue cheese, lardons or bacon bits, chicken, avocado, maybe some kind of onion (red or spring).
Quinoa salad: (I do a mix of quinoa with bulgar wheat, as that's just the packet I buy from Ocado!) cooked and cooled peas and broad beans, feta, chopped cucumber, chopped toms, chopped spring onions, maybe some avocado, lots of salt and pepper and extra virgin olive oil drizzled over the top.
Nicoise: lettuce, tuna, toms, hard boiled egg, maybe some red onion, some cooked French beans.
But basically whatever's out there, I also like adding artichoke hearts to salads, and sliced radishes for some heat.