I bought business cards and stickers to help advertise my art. I ordered them from Moo.com.
The quality is great and they were easy to design. I went with Moo.com beacuse I could add several different images with no extra charge. I have different mediums I work in and this was the best way for me to quickly be able to show potiental clients my ablities and versitility.
The stickers I figure will be a fun way to advertise by either sticking them in public places or handing them out.