Promotional gifts can serve many purposes. You can give them away to get your name or message out to people, especially useful if you are launching a new business, product or event.
You can give them to loyal customers so they keep your details to hand. Or to potential customers for the same reason.
You can use them as corporate or staff gifts. You can sell them to customers as part of your product line. You can sell them to members or supporters as part of your fundraising efforts.
Many businesses and organisations think they cannot afford promotional gifts. It is often the case that the cost per item is not a problem but that the number of items you have to order makes the price prohibitive.
The minimum order quantity on some items is just 1.