The Economist: I like to learn about social and economic changes in a vernacular way. This is mainly true when I have stayed there for some time, short or long, like in Brazil, Russia, India, Chile or Argentina.
Running shoe: For the last 15 years, I have been running. In some periods more fanatically than others, but I love the flexibility.
Book: Learning new things challenges you. One way to do that is a book.
Raspberry PI + camera: Small computers offer many project possibilities, mainly in the field of computer vision.