I just hopped on the salad-in-a-jar bandwagon. Finally. As with many things in life, I'm a little late to the game, but this one definitely falls into the better-late-than-never bucket.
While any type of salad certainly works here, classic Greek salad — loaded with tomatoes, cucumbers, salty kalamata olives, and creamy feta — is particularly suited for getting packed in a jar. The great thing about this salad is that the lemony vinaigrette keeps its place on the bottom of the jar, while all the other ingredients get layered and packed on top, so everything stays dressing-free until you toss the salad in a bowl.