I would bring some nice muffins, like apple cinnamon or banana nut. They can gave them for breakfast or with afternoon coffee. They can use them as a meal or as a sweet.
Something edible -- muffins, chocolate-covered strawberries, cookies, something like that. Edible arrangements are nice, especially if they have a smaller size (I've only seen huge ones, and two people might have trouble eating it all before it goes bad).