this requires very little work, which makes it perfect for paper-writing season.
1 cucumber, seeded and diced
2 tomatoes, chopped
a handful of mint leaves, chopped
a healthy chunk of feta, crumbled
mix everything together. i think it's great just as it is, but if you like, you can add a dribble of olive oil, a little black pepper, a squeeze of lemon, or even a bit of orzo to make it more of a meal.