Decide if your LLC will be member-managed or manager-managed. A "member" of an LLC is either an owner of or investor in that LLC. A member-managed LLC affords each member equal rights in deciding how the business will be run. A manager-managed LLC is where the members elect several from their number to be responsible for the company's business affairs.
Big supermarkets do offer this service, but delivery prices are often very high or the food is warm or bruised when it arrives at the customer's home. If you own a large car, you could become people's personal shopper. Some people do not have time to run errands after a long day at work and others may not have the physical capacity to do so, so why not do it for them? You could also couple this service with others, such as: