Hermione Granger.
Hermione has been in the village a few days. She arrived here on her way to her Ministry internship, so she had... work-type things with her mostly. HOWEVER. At this point in time, she's taken to carrying around her little beaded bag (with the undetectable extension charm on it) as a purse, so I'm sure it's crammed full with a crapload of random stuff. Books, potions of the everyday variety (headache/Pepper-Up/etc.), her wand, a jacket, snacks...
Nothing particularly useful for survival, I'd imagine, but Hermione does have wilderness experience, so that makes up for it, I guess, haha.
She would have tried to help out in any way she could. She went out into the forest and gathered up the edible plants/berries/whatever that she could find. I guess she's been doing the cooking? IDK.
She invited Luna to live with her and welcomes other people!