I used to study behavioral neuroscience (BS) and bioengineering (MRes), which somehow qualified me for a PhD program in computer science at Harvard. I study swarm robotics, which means I some of what I learned about biology to make a lot of really simple (i.e., kind of dumb) robots work together to do cool things like make decisions.
Beyond accumulating a collection of vaguely related degrees, I also enjoy making things for fun, such as: this website, various baked goods, and overly complicated electronic devices that are a far bigger time sink than whatever benefit they produce.