In the past few years, 3D printing has evolved to become a household name, and its evolution continues as companies are pushing the boundaries of the concept. Enter LIX, a start-up company that has manufactured this world's smallest 3D printing pen. Technically, this pen is a 3D doodler rather than printer, enabling users to draw up 3D objects freely. This pen would be ideal for artists, designers, creatives, and hobbyists, who want to create their vision in 3D format. The UK-based company is looking for crowd funding on Kickstarter right now, so make a pledge if you want to see this product become a reality.