Final answer:
The Dursleys gave Harry a fifty-pence piece for his first Christmas at Hogwarts, emphasizing their neglect and lack of understanding of his magical world.
Step-by-step explanation:
In his first year at Hogwarts, Harry Potter received a rather underwhelming Christmas gift from the Dursleys: a fifty-pence piece. This gift is consistent with the Dursleys' generally neglectful and disdainful treatment of Harry throughout his childhood, as depicted in the book series.
The Dursleys' lack of affection and understanding for Harry's world is highlighted by this uninspiring Christmas present, which stands in stark contrast to the magical and wondrous experiences he encounters at Hogwarts.