Japanese astronaut Koichi Wakata is using some of his time aboard the International Space Station to create art, namely spiral light paintings made utilizing the station's microgravity and a spinning top.
Wakata has been tweeting his most recent light paintings. First, he showed off the "Spiral Top" designed by light artist Takuro Osaka. The top has LEDs attached, and by taking long exposure photos, Wakata can show off the path of the LEDs through the ISS corridors.
This isn't the first time that Wakata and Osaka have collaborated on ISS art. Here a couple of pieces that Wakata made using an Osaka Spiral Top during his 2009 stay aboard the ISS (via the University of Tsukuba):