Some interesting fun facts I found and wanted to share with you! Credit to the Harry Potter wiki:
The original last name for Neville's character was "Pupp"
If you rearrange the letters in "Severus Snape" you get "Pursues Evans".
The only autograph Harry ever gave out was to Colin Creevey.
Both Michael Corner and Harry have dated the same girls, but in a different order, Cho Chang and Ginny Weasley.
Harry Potter is still the only wizard to this day that has had all three Unforgivable Curses cast on him and survived.
David Thewlis had originally auditioned for the part of Professor Quirinus Quirrell, but Ian Hart was eventually cast.
Minerva McGonagall almost married a muggle named Dougal McGregor when she was 18. Minerva realised that wedding a Muggle who was oblivious to the fact that she was a witch would mean she would live unhappily with her wand locked away, shredding all of her ambitions. She turned down the proposal and left for London.
Rupert Grint is like Ron in that he comes from a large family, has red hair, and suffers from arachnophobia.
Dumbledore is an old 18th century English word for 'bumblebee'. It is still used in Newfoundland, Canada, to refer to a bumblebee. Rowling stated she imagined him flitting about the castle humming to himself.
Oddly enough, many of the predictions made by Trelawney and others during the third year come true. Ron does in fact go through trials and suffering during the hunt for the Horcruxes, and ends up happy from the experience since he becomes closer to Hermione. Harry does come into a great sum of unexpected gold; his prize money for winning the Triwizard Tournament (though later it was transferred to the Weasley twins), and his inheritance from Sirius after his death. Harry also ends up working for the Ministry of Magic, although it is unknown if he ever became Minister. Though Trelawney seems to have been making it up at the time, seeing a death omen in Harry's cup, Harry did face his own death in 1998, although he did not actually die.
Rupert Grint says his favourite scene is also the Yule Ball scene in the fourth film, the same as his colleague: Emma Watson.
Hogsmeade was founded over a thousand years ago, around the same time as Hogwarts School of Witchcraft and Wizardry, by medieval wizard Hengist of Woodcroft as he was fleeing persecution by Muggles.
Lucius is a name that derives from Latin meaning "bright" or "intelligent" and is related to the name Lucifer, the first name of Satan, which may reference Lucius Malfoy being bright but evi