Just in case
I'm really coming from a visual standpoint and am sincerely tempted to just draw some of these as art pieces because the images in my brain are profoundly amusing me:
The Fool: Ron
The Magician: Harry
The High Priestess: Hermione
The Empress: Minerva
The Emperor: Albus
The Hierophant: Cornelius Fudge
The Lovers: Molly and Arthur or James and Lily
The Chariot: Sirius on the flying motorbike (or Buckbeak)
Strength: Hagrid
The Hermit: Severus
Wheel of Fortune: Fred and George
Justice: Moody
The Hanged Man: Remus
Death: Dementor
Temperance: Neville
The Devil: Lord V- with Lucius/Narcissa
The Tower: Astronomy Tower (with Dark Mark overhead)
The Star: Tonks
The Moon: Luna Lovegood
The Sun: Gilderoy Lockhart
Judgement: a Pensieve
The World: Hogwarts
So I couldn't fit the squid in, but I did manage Lockhart and I feel good about that :)