Recognized graphic designers usually charge a fee for their work, but what if this project isn't expecting any funds and is expected to run purely off the community?How would I attract a graphic designer (or designers) to create logos, web site graphics and other artistic/graphical works? 
How do I recruit a graphic designer to help on a project with no funding involved?
project management;community
Visibly crediting their work on the site/product could be seen by some as payments through advertising.Some graphics design crowdsourcing sites might accept a volunteer/for free project category. Contributors would be interested to contribute to such projects to increase their visible portfolios, exposure, reputation and ultimately their chances of participating/winning in paid projects.