LIX: the world's smallest 3D printing pen doodles in mid-air
12 NIP Lix 3D Print Pen filament refill tubes - ABS Orange -480 total sticks | eBay
Amazon.com: 3D Pen /Printer Filament 280 Feet , 14 Extra Long Vivid Colors , Premium PLA , Each Color 20 Feet , Bonus 100 Stencils EBOOK and 3 Glow in The Dark