When I needed to get heavy into promotional advertising of my name and the office I was campaigning for, I ordered a few boxes of those plastic yard signs. They are really neat. They are basically a wire frame and heavy plastic bag that slips over the frame. The wire is U-shaped, and you turn it upside down and stick it into the ground. Then just slide the plastic bag over the top of the frame. The plastic is printed on both sides with whatever you want, and it is in full color. You can print anything from text to symbols to photos. It is a very inexpensive way to get into productive promotional advertising. I have seen them used for everything from political campaigns to advertising new businesses.
I also purchased a lot of giveaway promo products that had my name, the office I was running for and my campaign slogan printed on them. Myself and volunteers would hand them out everywhere.