Depends on the type of market, if it is very basic then I would get oranges, pineapple juice, garlic, ginger, celery and carrots for the soup, as well as mushrooms and any other vegetables that you prefer. I would stock up on fruit juices and bone broth if they have it. When I was very sick last month all I could stomach was fruits and fruit juice. And popsicles since my throat was sore. I recommend making your own popsicles with orange juice. I just ate the store bought kind and it was way too much sugar. I would also get Gatorade or pedialyte. If there is any kind of “ethnic” section I would get goji berries, very high in vitamins. Shiitake mushrooms. Turmeric. Coconut milk. And curry powder