NOFAME - Probably the world's most unique T-shirt brand
StartupDrugz - T-shirts & posters celebrating the absurdity of startup life
Ship Ship Ship - 🚢 Ship Ship Ship stickers
StartupShirts.org - THE marketplace for startup swag
Swag for Dev - A list of opportunities for developers to score some swag 😎
DevTees - Graphic t-shirts made for developers.