This page is a collection of all the absolutely horrible art that Free Software people approve for use with their projects. For some reason it seems like almost every project deeply involved in the GNU / FSF community thinks that 80s newspaper cartoons are the pinnacle of artistic achievement. Like, come on, hire a designer.
From: http://www.gnu.org/graphics/agnuhead.html
From: https://wiki.parabola.nu/Get_Parabola
From: http://www.gnu.org/graphics/gnu-jacket.html
From: http://www.gnu.org/graphics/3dbabygnutux.html
From: http://www.gnu.org/gnu/gnu.html
From: https://www.gnu.org/ghm/2014/