I've used NEBS (www.nebs.com) for several years for business checks, promotional materials, and more.

Along with VistaPrint items, here's some ideas for items you can use to build awareness of your business:

>> Business Card Magnets
http://www.nebs.com/nebsEcat/products/product_detail.jsp?pc=108761
- 500 for just $120
- Normal business card size (2-1/2" wide by 2" high -- imprint area slightly smaller)
- Two-color designs (variety of colors available)
- 20 mil. vinyl magnet
- Quick shipping (approx. 1 week)

>> Imprinted Pens
http://http://www.nebs.com/nebsEcat/products/product_detail.jsp?pc=108642
- 300 for just $177
- Made by Bic
- Ships in six days

>> Doorknob Hangers
http://www.nebs.com/nebsEcat/products/product_detail.jsp?pc=8211
- 500 for $89.95
- Includes a perforated business card design at the bottom

>> Full-Color Postcards
http://www.nebs.com/nebsEcat/products/product_detail.jsp?pc=3986
500 for $150
- 4 x 6 postcards without a border
- You supply the photo or artwork, then choose laout, font, and ink color
- 12 point glossy paper

Other ideas from NEBS:

- Keychain Tags
- Linen or Glossy Folders
- Personalized Thank You Cards
- Gift Certificates
- Advertising Labels & Mailing Labels
- Business Checks including computer checks
- Pre-inked stamps (including a "Confidential" one)
- Logo design service
- Polo shirts, Denim Shirts, Work Shirts (low quantity - can order just 1!)