Cactus
thingiverse
By employing Jetty's OmNomNom app, I successfully printed a cactus replica from an iPhone image of a plastic one purchased at a party supply store years ago. Using the medallion feature and customizing OpenSCAD to set base=0, I was able to achieve my desired result. Interestingly, this appears to be the first (tagged) cactus model on Thingaverse!
Download Model from thingiverse
With this file you will be able to print Cactus with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Cactus.