That's a lovely offer. I'll be honest. I don't know this time at all, so keep that in mind.
Off the top of my head, the cafe could use potatoes, mushrooms, tomatoes, garlic, onions and olive oil. Since it's France, wine, cheeses, fleur de sel, if that's not too pricey to ask for.
Herbs would be nice. I can send a list of those too, if it's not too much to ask for.