I have offered the extra shopping services but typically never requested them.
Please keep in mind our unit has a full kitchen and laundry and items are seldom wasted unless they are pitching and I did not know :):
I typically include:
basic pantry items: spices, and sweeteners, olive oil, and vegetable oil, along with pancake, muffin or cookie mix, pasta/ sauce, canned soup, hot cereal, coffee, coffee pods, tea, creamers, peanut butter & Jelly.
Toiletries/consumables: Shampoo, Conditioner, Soft Soap, Lotion, paper napkins, paper towels, TP, Tissues, Air fresheners (Under sinks): travel dental kit, feminine products, paper, cups, q-tips, cotton balls, Dishwasher, dish, and laundry soap and dryer sheets. Plastic wrap, bags, foil, parchment paper.
Table Snacks: Granola-type bread, snack-size chocolates, packaged pastries ( muffins, bread, croissants, fresh fruit.
Fridge: Cream cheese, 6 eggs, bottled water, 2 juice, milk, creamer, butter, and condiments.
Special Occasion ( I will occasionally include, based on availability something): A card, cake, cookies, chocolate-covered strawberries, charcuterie, flowers
Now you may think holy cow, but to me these are conveniences and treats - many flights arrive here 11 pm to 3 am... and we are 15-20 min from town. They are tired, maybe hungry, it can be very cold and need a snack on arrival or in the morning before stocking up on supplies. We don't have a lot open after 8 pm for restaurants and most grocery is not 24/7. And some items are hard to get in small or travel sizes. I will say VERY seldom to guests decide it's a free for all and obviously take/use everything not nailed own and even then it is more than some but not all.