A Home Depot near me has lockers that customer's can pick up their orders that are away from the check lanes and customer service. You just walk in and scan your phone or type the password in and get your order. It's great for small items.
The Walmart nearby has a kiosk with a waiting area (away from the cash registers). An associate then gets your item from you from a lock box or storage area.
Neither of them have to be manned the majority of the time.