In the Harry Potter books, Harry grows up with the Dursleys, which consists of his uncle Vernon, aunt Petunia, and cousin Dudley. They are very mean to Harry in the series. You can argue with me, but locking an orphan in a closet is basically scientific proof.
Every year for Christmas while Harry is at Hogwarts, the Dursleys send him a pathetic gift. It appears as if they are trying to send the worst present possible. In the first book, they send him a 50-pence piece (50 pence is equal to 71 cents in the U.S.). In the second book, they send him a single toothpick. In the fourth book, they send him a tissue.
What if when Rowling was writing the books, she did this intentionally to foreshadow the Deathly Hallows. We know that these are the three Deathly Hallows:
Now, if you'll notice, the fifty-pence piece is similar to the Resurrection Stone as they are both small, hard objects. The elder wand is similar to the toothpick because they are long objects. And the tissue is similar to the invisibility cloak because they are both cloth-type things that can be used to cover or cloak things.
Was J.K. Rowling doing that on purpose to foreshadow the Deathly Hallows?