StartupDrugz - T-shirts & posters celebrating the absurdity of startup life
DevTees - Graphic t-shirts made for developers.
Teespring Direct - Simple high-quality swag for you or your company
Web Trumps - A nerdy card game all about startups
PackMojo - Create custom packaging in 3D and order in low volume
Shirts of Startups - Humans of NY-style founders showcase feat. startup shirts