Goodnik is an organization that, in part, promotes using technology to increase the impact of social causes. So a t-shirt filled filled with butterflies, rainbows, unicorns and images of a globe or people holding hands IS NOT going to work (unless it's in an ironic way). Think more edgy, more fun. More hipster. More geek.
Because my organization works in the technology sector, I need a t-shirt design that appeals to the "digerati" - something someone might actually want to wear, or perhaps even more importantly, buy. I don't need a shirt with a logo on it - I could do that on my own. I'm looking at shirts from Threadless, BoingBoing and others as inspiration; something that can take the Goodnik name and make it cool, blending it with some kind of graphic that is attractive and distinctive.
Since my organization is new and I'm looking to raise money, one idea that I've had is to make a limited edition t-shirt (either in color or design) so that I can attract those who might want something that shows they were an "Original Goodnik" supporter. That's not a requirement, but I think there are some potentially good themes around that idea.
Note that the worrd "goodnik" refers to a person - it means someone who does good things. So the person wearing the shirt is identifying themselves as a goodnik.
The design of the shirt does not need to include the word "goodnik" in the main part of the design, though it should at least include it on the back. If the word is used in the design I prefer it be used as "goodnik" not "goodnik.org"