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:
Waterskin...