For most tomato uses an equivalent volume of cherry tomatoes works fine. In some cases they're superior because they're already divided into bite sized portions.

Tiny potatoes bake up a treat (in groups of course ) if you oil and salt the outsides first and time them correctly.

I love them on sandwiches, you can place the halves to fit the shape of the bread. And you're going to cut those caprese slices to fit in your mouth anyway. Use smaller basil leaves and cheese pieces with cherry-tomato halves, it would be very pretty. Or just make "Roman Salad," with whole ones, bocconcini, pesto and extra chopped basil. Delicious!

(I have cherry tomatoes growing vigorously in a pot on my balcony, just from poking a ripe one into the dirt and watering.)

There's an entire subreddit for people who complain about recipes because they decided not to follow the ingredients list.

Diet cream usually won't work in cooking because it will curdle when real cream won't.