MakerBot Coin created in Inkscape, from a traced scan of a MakerBot sticker. Exported as a DXF using
Inkscape OpenSCAD DXF Export: http://www.thingiverse.com/thing:14221. Then imported into OpenSCAD and extruded using DXF linear_extrude().

Learn how to make it yourself in the OpenSCAD DXF extrusion tutorial in Getting Started With MakerBot: shop.oreilly.com/product/0636920026723.do