First, let it be said that I have no financial interest in Vistaprint. That being said they do offer some inexpensive promotional materials. Once you order items from them, you will be bombarded with offers for free items. Take a look at them. Plan out what types of promotions you'd like to do and order a few samples.
HERE'S ONE CAVEAT!!! When ordering from them (or a lot of companies) use a credit card gift card. After using my credit card I noticed several unauthorized charges to Denmark. I had even used PayPal. I know use the prepaid gift cards and have not had the problem since.