From the classic meal we usually have: slices of bread, some pecorino cheese and a dried and seasoned sausage.
Also Pane e Pizza ( bread and pizza), which is very nice when you have some extra bread leaning in your house but it's a bit too hard to eat it. Some tomato sauce on it, few bits of mozzarella (the fresh one is always the best, but you can buy the dried one and it's still good) and you can add all the toppings you want. Heat it in the oven to melt mozzarella.
And for something completely different, Bread! Grab som fresh bread, cut it in slices and store it in the oven at 100°C for just a minute, so that it dries on the outside. Then cut a clove of garlic in half and rub the cutted part against the slice of bread. The more you like garlic, the more you rub it. Add some olive oil on it, even some salt if you like, one more minute in the oven and there you have a very quick and good tasting snack.
During summer, it's also nice a good plate of rice salad. You make some rice ( 500 grams is fine, it lasts for two meals or one for two people ) and let it cool to ambient temperature. Just cut and ad add some mozzarella, black olives, corn, fresh tomatoes, one or two cans of tuna and artichokes in oil. That's my favourite meal during summer, especially when I'm at the beach.
Hope you like it, cheers!