Either camp supplies has to be in your inventory AND there is no "Send to Camp" -OR- camp supplies can be anywhere (like the camp chest). Having this weird mix of the two is just odd.
Yes. I wish there would be a stash to put food into. Just the other day I was at the mini camp at the goblin base and the mini camp didn't have the chest where I put my food into. Oh the pain. (Main camp has this chest, the mini camp does not).