WobbleWorks put together an incredible KickStarter recently, that raised over $2.3 million in funding, for a 3D printing pen. The 3Doodler is a pen that can draw in the air. You can hold it in your hand and draw 3D objects. No software or computer necessary.
Gangplank Labs has supported this project and should have a 3Doodler in hand by the end of the year. We will keep you updated, so when it comes in you can stop by and doodle with us. Happy Hacking.