Backpack

• Brown - Al Dee/Lee'Delle (Rookgaard) 10 gp

Mainland of Tibia:

• Beach - Red Lilly (Liberty Bay) 20 gp
  
• Blue - Beatrice (Edron) 20 gp
  
• Brocade - Gree Dee (Yalahar) 20 gp
  
• Brown - Iriana (Trade Quarter in Yalahar) 10 gp, Raffael (Island of Destiny) and Zora (Tyrsung) 20 gp, Lubo (Northeast of Thais) 25 gp
  
• Camouflage - Perod (Port Hope) 20 gp and John (Treasure Island) 30 gp
  
• Crown - Angus (Port Hope) and Mortimer (Northport) 800 gp
  
• Demon - Grizzly Adams (Port Hope) 1000 gp also lootable from Demon (not confirmed)
• Fur - Bertha (Svargrond) 20 gp
  
• Golden - Ahmet (Ankrahmun) 10 gp
  
• Green - Bashira (Ab'Dendriel) 20 gp
  
• Grey - Bezil/Nezil (Kazordoon) 10 gp
  
• Moon - only lootable from a Wisp and Leviathan.
• Orange - Gorn (Thais) 20 gp
  
• Pirate - only lootable from Pirate Buccaneer, Pirate Corsair, Brutus Bloodbeard and Deadeye Devious.
  
• Purple - Sarina (Carlin) 20 gp
  
• Red - Shiantis (Venore) 20 gp
  
• Yellow - Halif (Darashia) 10 gp

Others:

• Backpack of Holding
  
• Old and Used Backpack (formerly known as Sam's Backpack)