By now you've likely heard about Made in Space, the company that created the printer orbiting the Earth on the Space Station, so you may be interested in knowing they are putting the printer to good use: printing much-needed objects that would otherwise take considerable time and money being shipped to the astronauts.
According to Wired,
"When International Space Station commander Barry Wilmore needed a wrench, Nasa knew just what to do. They 'emailed' him one. This is the first time an object has been designed on Earth and then transmitted to space for manufacture."
So far, 21 items have been made using additive manufacturing to help determine how well the printer performs in space.