A two-handled golden cup with a badger engraved onto its surface, Helga Hufflepuff's cup was said to have magical properties and was passed down through the Hufflepuff family for years and years - until it came into the hands of a young Tom Riddle. It was eventually transformed into a Horcrux and left in the care of Bellatrix Lestrange, which she locked away in her Gringotts vault.