0 - ??? (Franklin badge)
4 - NPC item
8 - Broken item
16 - Bashing weapon
17 - Shooting weapon
20 - Body armour
24 - Arm armour
28 - Other armour
32 - Edible food
36 - Edible liquid
40 - Condiment
44 - Edible food for all characters
48 - Non-edible medicine
52 - Battle item (performs a combat move)
53 - ??? (Fly honey, Defense shower, Sudden guts pill)
56 - Items used outside of battle (like an Eraser)
58 - ??? (Hawk eye, bicycle, zombie paper)
59 - Key items (can't be tossed)