Dealing with Items as Resources
The items on the adventuring gear list are not just flavor and gimmicks for a PC, but vital to survival and success. Light sources, ropes, backpacks, bedrolls etc. are important resources and it may be impossible to overcome some challenges without them. Of course, this is also true for weapons, shields, armor and ammunition.
As a GM, you should not shower your players with large amounts of coins or mystic items that make parts of the adventuring gear entirely obsolete. It would eliminate the purpose of coins as a reward and resource to manage. The players are supposed to track their usage of light sources, rations, ammunition and everything else.
If a player miserably fails a check, you might roll a die to determine what item from their inventory is now lost. For example, if a player cannot swim and falls into water, they may be able to save their lives by holding on to a floating tree, but lose a weapon or some rations in the process.
If the party does not have access to a proper market, they will have to have the necessary expertise to make their own disinfectants and healing salves.
Equipment may be damaged or destroyed during combat (see the item counter damage). This will force a character to pick up a shield from a defeated enemy or a fallback weapon they carry.