President Obama Attends White House Science Fair

WASHINGTON, DC - APRIL 13: U.S. President Barack Obama blows a bubble from a bubble wand made with a 3D printer by nine-year old Jacob Leggette while touring exhibits at the White House Science Fair April 13, 2016 in Washington, DC. Leggette, of Baltimore, Maryland wanted to take on the Digital Harbor Foundation's MiniMakers challenge, but faced the practical problem of not having a 3D printer. Jacob wrote letters to different printer companies, asking if they would donate a 3D printer in return for feedback on how easily a then-eight-year-old could use their device. His sales pitch worked, and he has been creating toys and games ever since. (Photo by Win McNamee/Getty Images)