I just spent the past three days helping out on the Linux Australia stand in the expo at the Annual VITTA conference. We revised a 3-fold brochure for the event which might be handy for others.  This was originally put together for Software Freedom Day in 2006. Since then it has been through a few revisions with input from a number of people.

They're attached as .SVG files which can be edited / customised in Inkscape