Discman in Space
Aboard the International Space Station, Astronaut Donald Pettit demonstrated how taping together CD players can create extremely useful stable platforms, via gyroscopic force. It also means they can rock out to all their 90s jams while repairing oxygen tanks.
BEWARE: only physics nerds and Discman-enthusiasts will find this thrilling.
[Watch the full-length video at Today's Big Thing.]