are u into korean pork bbq?
its reallllllyyyyyyyyyyy cheap and can easily season with salt.
If your into kimchi, you can cook the kimchi on the oil created by the meat, and its a perfect combo.
its a must have for koreans during camping/picnic etc. give it a try~
you can make a dip for it with seasamee oil, salt and pepper. proabbly like 7:2:1 proportion.
SamKyupSal
also for ur list,
i think Alum Foil is a must
Assuming you guys are having a campfire you can wrap yam, corn, potato with foil and put it directly in the campfire and let it cook and it will be amazing. Also Marshmellows/Smores~
and you can make a makeshift pan, cup, pot etc with alum foil.
how long you guys going? thats alot of food.