|3 ounces of meat is about the size and thickness of a deck of playing cards.
A medium sized piece of fruit is the size of a tennis ball.
1 ounce of cheese is about the size of four stacked dice.
½ cup of ice cream is the size of a tennis ball.
1 cup of mashed potatoes is the size of female fist
1 ounce of nuts should fit into the small of your hand.
1 teaspoon of butter is about the size of the tip of your thumb.