I attempted to create high-level adventuring kit (two versions). You just need to add magical items and not much else.
Standard High-Level Adventurer's Kit - LIGHT VERSION
Dagger, cold iron 4 gp, 1 lbs
Dagger, alchemical silver (hidden on your body), 22 gp,
Backpack, 2 gp, 2 lbs:
Beltpouch, 1 gp, ½ lbs:
Light warhorse, 150 gp
Military saddle, 20 gp, 30 lbs
Bit and bridle, 2 gp, 1 lbs
Saddlebags, 4 gp, 8 lbs:
Total value: 449,6 gp
Carried weight: 17½ lbs
Total weight: 73½ lbs
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SH-LAK - HEAVY VERSION
Light pick, handaxe or ligh mace (choose a different type than your primary weapon), 4-6 gp, 2-4 lbs
Dagger, cold iron 4 gp, 1 lbs
Dagger, alchemical silver, 22 gp, 1 lbs
Dagger (hidden on your body), 2 gp, 1 lbs
Backpack, 2 gp, 2 lbs:
Beltpouch, 1 gp, ½ lbs:
Light warhorse, 150 gp
Military saddle, 20 gp, 30 lbs
Bit and bridle, 2 gp, 1 lbs
Saddlebags, 4 gp, 8 lbs:
Total value: 307 gp
Carried weight: 29 lbs
Total weight: 149 lbs
Standard High-Level Adventurer's Kit - LIGHT VERSION
Dagger, cold iron 4 gp, 1 lbs
Dagger, alchemical silver (hidden on your body), 22 gp,
Backpack, 2 gp, 2 lbs:
- Waterskin, 1 gp, 4 lbs
- Sack, 1 sp, ½ lbs
- Rations for 2 days, 1 gp, 5 lbs
- Alchemist fire, 20 gp, 1 lbs
- Everburning torch, 110 gp, 1 lbs
- Flint and steel, 1 gp
- Antitoxin, 50 gp
- Holy water, 25 gp, 1 lbs
- Parchment*5, 1 gp
- Ink, 8 gp
- Quill, 1 sp
- Tindertwig, 1 gp
- Piece of cloth, 1 lbs
Military saddle, 20 gp, 30 lbs
Bit and bridle, 2 gp, 1 lbs
Saddlebags, 4 gp, 8 lbs:
- Rations for 5 days, 2½ gp, 5 lbs
- Winterblanket, 5 sp, 3 lbs
- Winter clothing, 8 gp, 7 lbs
- Fishing hook
Carried weight: 17½ lbs
Total weight: 73½ lbs
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SH-LAK - HEAVY VERSION
Light pick, handaxe or ligh mace (choose a different type than your primary weapon), 4-6 gp, 2-4 lbs
Dagger, cold iron 4 gp, 1 lbs
Dagger, alchemical silver, 22 gp, 1 lbs
Dagger (hidden on your body), 2 gp, 1 lbs
Backpack, 2 gp, 2 lbs:
- Waterskin, 1 gp, 4 lbs
- Sack, 1 sp, ½ lbs
- Rations for 2 days, 1 gp, 5 lbs
- Bullseye lantern, 12 gp, 2 lbs
- Oil, 1 sp, 1 lbs
- Sleeping blanket, 1 gp, 5 lbs
- Crowbar, 2 gp, 5 lbs
- Chain, 30 gp, 2 lbs
- Wheatstone
- Flint and steel, 1 gp
- Tindertwig, 1 gp
- Piece of cloth, 1 lbs
Military saddle, 20 gp, 30 lbs
Bit and bridle, 2 gp, 1 lbs
Saddlebags, 4 gp, 8 lbs:
- Rations for 5 days, 2½ gp, 5 lbs
- Winterblanket, 5 sp, 3 lbs
- Winter clothing, 8 gp, 7 lbs
- Fishing hook
- Oil*5, 5 sp, 5 lbs
- Knotted silk rope, 10 gp, 5 lbs
- Grappling hook, 1 gp, 4 lbs
- Tent, 10 gp, 20 lbs
- Leather armor, 10 gp, 15 lbs
- Shovel, 2 gp, 5 lbs
- Iron pot, 5 sp, 10 lbs
Carried weight: 29 lbs
Total weight: 149 lbs