Some examples of objective case pronouns would be the following:
As a direct object:
Justin drove me to school this morning.
I can help you with your homework.
As an indirect object:
Riley lent him a pencil before the test.
Michelle baked them a cake.
As the object of a preposition:
You can leave your jacket with us and pick it up after the show.
Jade’s dress was sewn by her and her mother.