There’s always a low-cost solution to market your products and services. Here’s an interesting example from a band:

Unable to afford a proper camera crew and equipment, The Get Out Clause, an unsigned band from the city, decided to make use of the cameras seen all over British streets.

http://www.telegraph.co.uk/news/newstopics/howaboutthat/1938076/The-Get-Out-Clause%2C-Manchester%27s-stars-of-CCTV-cameras.html

The band successfully made a lot of noise and didn’t spend much money. Simply amazing!