StartupShirts.org - THE marketplace for startup swag
StickerPop API - Embed all the best stickers and GIFs into your apps.
DevTees - Graphic t-shirts made for developers.
Acrylic Charms by Sticker Mule - Add some charm to your life.
Techstarrr - T-shirts for tech superstars
GIPHY Stickers for Instagram Stories - Add fun GIF stickers to any photo or video in your story