Use Tinkercad to make a business card with text and a QR code on it. Make it printable in Meshmixer and then 3D print it in two colors on a single extruder MakerBot.
Drafting, Modeling and 3D Printing with Lydia Sloan Cline
Hand drafting for Interior Design, SketchUp, Autodesk 123D and MakerBot