Alcohol hand gel greater than 60% alcohol.
Dettol
Soap
Two weeks worth of food, think breakfast lunch tea, snacks, drinks. If things aren't going to last two weeks, think of an alternative, Eg dried milk?
Think personal hygiene and cleaning.
Think entertainment, Eg a new toy, book, craft set etc.
There is a thread on this board with a list of food people have bought. Choose what you eat for your family, think of ingredients that will make whole meals. Eg pasta, sauce,tinned veg, beans or meat, juice, pudding?
Think about first aid supplies.
See Brexit board, non food preps.
Buy what your family will eat. You may have to solve problems with a different solution for different members. ( Eg DD has soya milk, Ds will have dried milk or maybe pasta for breakfast)
Multi vitamins.
Think about food you would want to eat if poorly. Eg soup, jelly,
Thinks easy to prepare, Eg cup a soup, cous cous.