Tomatoes are delicious in, on or around just about anything in my opinion. Making caprese is very simple and can be done in various ways. All you really need are tomatoes (any size: grape, roma, beefsteak, plum, cherry), fresh mozzarella, olive oil, balsamic vinegar and basil.
You can use any variety of tomato in any form, I chose to use grape tomatoes and bocconcini mozzarella, sliced in halves... For those of you not familiar with fresh mozzarella, most stores sell three sizes: ciliegene (cherry size), bocconcini (bite size) and ovoline (egg size).
I sliced my grape tomatoes and bocconcini mozzarella balls in half, mixed them together, poured olive oil and balsamic vinegar over the top and added a little chopped basil for garnish.
Here are some more ways to prepare caprese that I found via google image: