The merchant can offer free or very cheap delivery, while the customer participating gets large discounts.
Offer customers to help you deliver other packages in their neighborhood for a significant discount. If they participate, they come and pick up their order, plus all the orders in their neighborhood, and deliver them for you.
Inventory is expensive.
Have only a showroom with lots of items from groceries to cars and anything between. Anything (that’s available in the warehouse) you buy will be delivered next day at the latest (or picked up by the buyer at a delivery point of their choice.) Delivery is free. No inventory to manage except at the central warehouse. The customer doesn’t have to carry anything home.
You’re busy but would like your kids to have quality cooked food when they come home from school.
A service that delivers cooked food specifically cooked with kids in mind: things they love and are also healthy and high quality. You can choose 2–3 dishes that would last the whole week, from a large variety, and get it delivered to your door. You only have to heat it.
A novel way to deliver a letter or a small gift.
A delivery service that uses small drones at the last step of delivery. Most of the route is done by a car just as any other delivery. When arriving at the recipient’s address, a short distance hand controlled drone is used for the final step of delivery at the front door or even a window.