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,
Eyesight-Adjusting Screens: This prototype concept is hi-tech; rather than having to wear glasses to see better, it lets the object adjust to your eyesight. This idea by Ryan Jongwoo Choi is called the iFree.