Zines
The ultimate mode of DIY self-publishing is the Zine. Although they've been around since the invention of the photocopier, Zines culture really flourished in the early 90's. A Zine (a small-edition,amateur magazine)is traditionally volunteer-produced, photocopied, and stapled together.

Want to make your own zine?
Check out these online zines:
No Frequency
Kiss Machine
Bust - Zine turned Magazine