When Commander Barry Wilmore (of the ISS) needed a wrench the team at Made In Space delivered, via email. The wrench was designed - in CAD - on the ground, emailed to NASA and transmitted to the International Space Station. Commander Wilmore was then able to build the wrench on site using a 3D printer; it may not be rocket science per se, but it's pretty darn cool.
For the full article at Gizmodo see link below:
NASA E-Mails Wrench - Article