I clicked "surprise me" and found a page that has a picture of astronauts on the ISS with SPHERES: http://www.madsci.org/
In high school my friends and I were on a team for a robotics/programming competition run by NASA and MIT that involved programming 3d models of these SPHERES to do some action in a virtual space against an opponent. But if you made it to the final round, you got to watch your code get executed by ACTUAL SPHERES on the INTERNATIONAL SPACE STATION. We won 2 years in a row, and made it to the final round 3 times (while I was on the team, I think they made it to the final round once the year before I joined). I doubt I'll ever do anything nearly that cool ever again in my actual career now.
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