putting things near the door is a way to move things closer to where they belong, from one venue to another. its a habit aimed to remind. its a way to conserve energy (by not making two trips to the car) and its a way to remember to run an errand. things that come in the mail, to the house, but belong to the business, find their way to the threshold of our house before reaching, first the car, then their destination. as do ingredients, small appliances that need sharing, gifts and cakes for birthday celebrations, shoes that need resoling, laundry for the dry cleaners.