LIX recently launched the smallest handheld 3D-printing pen at Kickstarter. The pen is powered from a USB by electricity. After about a minute, the pen is hot enough to make vertical 3d illustration. I’d totally buy one.   

LIX 3D printing pen has the similar function as 3D printers. It melts and cools coloured plastic, letting you create rigid and freestanding structures. Lix has a hot-end nozzle that is power supplied from USB 3.0 port. The plastic filament ABS/PLA is introduced in the upper extremity of Lix Pen. The filament goes through a patented mechanism while moving through the pen to finally reach the hot-end nozzle which melts and cools it down. An interesting fact about this light-weight, engineered pen is that these structures can be formed in any imaginable shape.

[via mashable]