When I'm not thinking about science...
I enjoy reading Sci-Fi (I'm especially a big fan of Stephen Baxter's Xeelee
Sequence - lifeforms based on complex interactions of convection cells? here you go!),
writing, hiking, traveling, photography (and of course love to combine the previous three). Also, I like to
do various crafts from drawing, painting and woodworking to modelmaking and tinkering
(another place besides science for putting creativity and inventiveness into
practice!).
Arduino
I'm using an AREXX AAR-04 robot
http://www.roboternetz.de/
http://www.arexx.com/forum/viewforum.php?f=19
modelmaking
stone painting
computer graphics