One of the most difficult parts of 3D printing is the learning curve associated with the software. The 3Doodler ($75+) removes that hurtle so anyone can build cool 3D models. The 3Doodler is the first and only 3D printing pen currently available. It uses the same ABS plastic spools used by other 3D printers and requires no software or computers. All you have to do is plug it in, let it heat up for a few minutes and start drawing. Check out the [video_lightbox_youtube video_id=DQWyhezIze4 width=640 height=480 anchor=video] of the 3Doodler in action.