You’ll Never Believe That These Are Ballpoint Pen Drawings. Based in Shanghai,China, Wang 2mu (二木 王) is pretty handy with a ballpoint pen. The illustrator works mostly with blue and red ink to create intricately detailed designs that look as though they could be digital. His themes revolve around technology, childhood nostalgia, and domestic culture. The level of saturation and three dimensionality that he achieves with simple ballpoint pens is unbelievable.
CreoPop~This is the coolest (literally and figuratively) 3-D pen I've seen on the market. While most 3D pens works by melting plastic, CredoPop uses cool ink (photopolymer) instead, making this pen both safer to use as well as eliminating the offensive melted plastic odor. Also is charged via USB so there's no cord to get in the way of your creation. Affordability is also a huge plus.