Apple ARKit - A framework to create Augmented Reality experiences for iOS
StartupDrugz - T-shirts & posters celebrating the absurdity of startup life
Facebook AR Studio - Facebook's developer platform for Augmented Reality
StartupShirts.org - THE marketplace for startup swag
Vossle - Create Web-based AR Experience in Under 1 Minute. No coding required. No app required
DevTees - Graphic t-shirts made for developers.