Strangers is a remarkably tiny collective dedicated to the gift economic practice and the encouragement of alternative culture. They offer their products for free, both in both physical and electronic form.
Strangers (alternately titled "strangers in a tangled wilderness") is a distro that carries original zines in PDF format as well as albums in mp3 format. Most of their zines are available for free download from their website (listed below).
The most famous of their zines is "The super happy anarcho fun pages", a 12 page seasonal comic created by an accordion-playing traveller.