Here is an idea that I hope catches on. The software Retr3D helps in custom designing a 3D Printer build based on what parts are available. So old and obsolete PCs and Printers or non functional devices can be stripped of parts and repurposed as a whole new functional 3D Printer. I remember seeing some of these printers ar Makerfaire New York last year and always wondered at teh ingenuity and skill that went in designing and repurposing old parts but now even this seems to be simplified using the software to create a custom BOM for a printer. Will be watching closely for further development!
Retr3d creates 3D printer designs based on the materials that you have access to. Retr3d can create printers form mismatch parts gathered from e-waste.
More details after the jump at Wevolver.