Some examples of animals that have been cloned are as follows:
Chat with our AI personalities
Scales or balances.
Blood capillaries
the upper layer of the earth's mantle
some real world examples of a sphere could be a basketball ,baseball, soccerball ,or even there earth itself
Signs such a those on roads and the sides of boxes are all examples. In fact, since squares and rectangles are parallelograms, if you think of real world examples of square and rectangular objects, you can probably come up with tons!