The Hourglass

One of the important things of the wizarding world is time. To save Sirius from the dementors, Harry traveled in the time. The obsession of voldemort is immortality, and it is this obsession which made him turn do dark arts, and kill so many innocents. The deathly hallows have the power, according to the legend, to give you an eternal life. So, I made this hourglass represent Time. The immortality of the Harry Potter's adventures.

The hourglass has differents significations : The castle of Hogwarts which turns into sable shows the time passed at this famous wizarding school. Three wands are forming the pillars. those wands are also depicting a big part of the wizarding world. In deed, there are Voldemort's wand, Harry's wand and Dumbledore's Wand. We can also see the deathly hallows' symblol if we watch the hourglass from the top. A "20" is present below the hourglass (image 1)

I hope my idea will interest you !