Abandoned pens and other such stationery stand a chance at purposeful usage, thanks to the Pen Printer. The device uses the ink from discarded pens to print on paper. The current tech may not support such an ambitious idea, but it’s worth the exploration, since many of us have bundles of uncapped and discarded pens in our drawers for no apparent reason.
Add dimension to your drawings—literally—with a 3D printing pen. As you draw, a built-in UV light cures the ink, letting you build almost immediately. The ink is cool (not hot like other 3D pens), so it is safer for kids to use.