Took me a while (organizing projects with classes and the pitfalls of systems management isn't easy), but finally my 7th year pupils are printing their cutlery projects. Drawn in Visual Arts class, they modeled the objects using Sketchup (very carefully, 3D printing requires solid objects and Sketchup's workflow is prone to errors in this particular need). After the obligatory conversion process (Meshlab to convert from collada to stereo litography, netfabb to correct errors in the STL file), our 3D printer quickly gave us these objetcs.
Cool activity for students, congrats