An easy example for instance could be to use photo books printing in order to make a portfolio for yourself. This way when clients or potential business partners are thinking about working with you you have a very professionally presented way to demonstrate to them what you are capable of.
Alternatively you can use booklet printing in order to create brochures and this has a number of uses too. Brochures printing can be used in order to create a catalogue for instance, or just an information book, and they are a great form of promotion. Use brochures printing and then lie them around in your waiting room and people will flick through them while they wait for meetings (meaning they are primed for the meeting to go well). Alternatively package them with any deliveries and they are bound to flick through them and to soak in the propaganda. You can even use brochures printing and then post them through people's doors.