In Harry Potter's very first match, which was against Slytherin, he caught the Snitch in his mouth during the 1991–1992 school year.

The golden egg was a magical device and the goal of the First Task of the Triwizard Tournament. It was about the size of a regular dragon egg and placed among the female dragons' eggs, where Viktor Krum, Fleur Delacour, Cedric Diggory, and Harry Potter had to retrieve them. This was very difficult, considering that they only had Wands and their knowledge of spells.[1]

Gringotts has no known competition in the wizarding banking industry, and is most surely a monopoly in Britain. Given that the bank is, according to Rubeus Hagrid, the only wizarding bank in Great Britain, it stands to reason that the goblins would have a tremendous amount of power over the wizarding economy, as goblins are also the force behind minting the wizarding currency, Galleons, Sickles, and Knuts

T. M. Riddle's Diary was a simple blank diary, which Tom Riddle transformed into a Horcrux. The diary was made into a Horcrux in 1943, during Riddle's sixth year at Hogwarts School of Witchcraft and Wizardry. It was the first Horcrux he ever made and was used as a weapon.

In addition to delivering mail, the typical use owls are put to, Hedwig was also a close companion to Harry.

Harry Potter's wand was 11" long, made of holly, and possessed a phoenix feather core. This was described by Garrick Ollivander to be an unusual combination of wand core and wood.

The Mirror was discovered by Harry Potter on the night that he used his father's Invisibility Cloak for the first time, to search the restricted section of the library for information about Nicolas Flamel.

Rubeus Hagrid gave one to Harry Potter for his 13th birthday in 1993 as it was part of his requirements for his third year at Hogwarts School of Witchcraft and Wizardry.