Wear the Deathly Hallows necklace in as a sign of your knowledge in the arts of witchcraft and wizardry. The Deathly Hallows symbol is comprised of the Elder Wand, the Resurrection Stone and the Cloak of Invisibility. Whoever possesses all three is said to be Master of Death.
"...three objects, or Hallows, which, if united, will make the possessor master of Death."
- Xenophilius Lovegood