I would love to have a chest of consumables that I could use to upgrade weapons and armour with. The scarcity of consumables is an important part of the game's balance, I'm aware, but this is for fun and possibly a useful thing for those intending to solo deadfire and I'm a linux player so I don't have access to windows-based cheat consoles to just give me the stuff. You can put an upper limit (but make it large) if you want, or make them infinite, but bear in mind there are about 15 that are very heavily used in upgrading the quality of items. Some items like adra ban and sapphires are almost never repeated or offered in vendor reloads, whilst a bunch of items are rare drops from unique entities, and there's only so many xaurips you can kill. Some items are equivalent but only work for certain weapons, eg to upgrade some items to legendary you can use kraken eyes, but that doesn't always work for other items. The chest should be on the initial island somewhere, whether with a vendor or not is up to you.
Anyway, let's have a stab at it and I will do a solo run and advise requirements as I go if you wish.