I have a business account for Pintrest.
For me, I did create several boards of what my products were (I made them based on what the products were, for example: hats, capes, pins, etc).
Than I created other boards that are related to what I make, but what I really like, like, "Knitting Patterns I love," and "Sewing Patterns I love." I also made one for all the events we have. This way, your not completely spamming your customers with just the items you make.
Also, when you add a bunch of stuff to your pintrest, the more followers you will get. Trust me, I saw a big jump in my followers when I started using it more frequently, on both my personal and business accounts.
Below is the link to my pintrest account so you can see what I am talking about.
http://www.pinterest.com/3colon7/