My idea is to create a curbside personal shopping app. Existing customers in a shop will receive a list of items to buy and deliver just outside the shop (curbside). This would save valuable time of shopping + finding a parking spot for the end customer. The onsite shopper will earn a fixed % of money based on the order received which he can eventually use for his own shopping.
PS: This is not a regular personal shopper which includes home deliveries of groceries. It is purely a curbside shopping helper app!